Mark Blumenthal
@mysterypollster.bsky.social
Pollster. Husband. Father. Cyclist. Currently: YouGov (contractor). Formerly: SurveyMonkey, HuffPost, Pollster.com Contact me: https://linktr.ee/markblumenthal
Pro-tip: Never bet against Doug Rivers and @today.yougov.com! With undecided allocated, we had Dems ahead in VA 57-42 & NJ 54-44 https://today.yougov.com/politics/articles/53293-yougov-surveys-of-gubernatorial-elections-in-virginia-and-new-jersey-show-leads-for-spanberger-and-sherrill
November 5, 2025 at 12:59 PM
Pro-tip: Never bet against Doug Rivers and @today.yougov.com! With undecided allocated, we had Dems ahead in VA 57-42 & NJ 54-44 https://today.yougov.com/politics/articles/53293-yougov-surveys-of-gubernatorial-elections-in-virginia-and-new-jersey-show-leads-for-spanberger-and-sherrill
Reposted by Mark Blumenthal
I’m deeply honored to lead Data for Progress into our next chapter.
The point of our research is not to determine what our values should be, but how to fight for our values most effectively.
Excited to keep working with our amazing, dedicated team to sharpen our strategy.
The point of our research is not to determine what our values should be, but how to fight for our values most effectively.
Excited to keep working with our amazing, dedicated team to sharpen our strategy.
We are thrilled to announce that @rodonnell.bsky.social has been named the next executive director of Data for Progress!
Ryan is an expert in survey methodology with a long history in progressive and union politics — he has worked with DFP since 2019 to shape our electoral polling.
Ryan is an expert in survey methodology with a long history in progressive and union politics — he has worked with DFP since 2019 to shape our electoral polling.
October 30, 2025 at 3:15 PM
I’m deeply honored to lead Data for Progress into our next chapter.
The point of our research is not to determine what our values should be, but how to fight for our values most effectively.
Excited to keep working with our amazing, dedicated team to sharpen our strategy.
The point of our research is not to determine what our values should be, but how to fight for our values most effectively.
Excited to keep working with our amazing, dedicated team to sharpen our strategy.
Reposted by Mark Blumenthal
Whatever you may think of Jeff Bezos and his choices about the editorial page, the Post is the only local outlet doing this kind of high-quality, DC and DMV-centric polling. Thank goodness they're still here.
New Washington Post-Schar School poll: Most D.C. residents strongly oppose Trump’s city police takeover, with crime concerns continue a sharp decline and statehood support reaches a record high. Story w/ @joeheim.bsky.social @emgusk.bsky.social www.washingtonpost.com/dc-md-va/202...
August 20, 2025 at 1:57 PM
Whatever you may think of Jeff Bezos and his choices about the editorial page, the Post is the only local outlet doing this kind of high-quality, DC and DMV-centric polling. Thank goodness they're still here.
Reposted by Mark Blumenthal
A real-life story about the amazing progress we've made against cancer
And how that progress is now at risk, thanks to Donald Trump
www.thebulwark.com/p/research-t...
And how that progress is now at risk, thanks to Donald Trump
www.thebulwark.com/p/research-t...
No President Tried to Lose the War on Cancer … Until Trump
The story of a cancer patient, a researcher, and MAGA’s assault on science.
www.thebulwark.com
August 17, 2025 at 1:59 PM
A real-life story about the amazing progress we've made against cancer
And how that progress is now at risk, thanks to Donald Trump
www.thebulwark.com/p/research-t...
And how that progress is now at risk, thanks to Donald Trump
www.thebulwark.com/p/research-t...
5:00 am. Final pre-ride check list item: Poppa on board. Now we ride!!
#PMC2025 gives 100% of your donations to the Dana-Farber Cancer Institute. pmc.org/MB0437
#PMC2025 gives 100% of your donations to the Dana-Farber Cancer Institute. pmc.org/MB0437
August 2, 2025 at 9:19 AM
5:00 am. Final pre-ride check list item: Poppa on board. Now we ride!!
#PMC2025 gives 100% of your donations to the Dana-Farber Cancer Institute. pmc.org/MB0437
#PMC2025 gives 100% of your donations to the Dana-Farber Cancer Institute. pmc.org/MB0437
I'm riding 186 miles across Massachusetts this weekend to raise $$ for the Dana Farber Cancer Institute, and I hope there's one thing my 6800 rider comrades and the 3500 volunteers should agree on: Let’s all support the National institutes of Health! #PMC2025
August 1, 2025 at 8:47 PM
I'm riding 186 miles across Massachusetts this weekend to raise $$ for the Dana Farber Cancer Institute, and I hope there's one thing my 6800 rider comrades and the 3500 volunteers should agree on: Let’s all support the National institutes of Health! #PMC2025
This weekend, for the 15th straight year, I'm riding 186 miles over two days across Massachusetts to raise funds for the Dana Farber Cancer Institute. This terrific Today Show segment explains what it's all about. #PMC2025
youtu.be/vyciUXk_1hI?...
youtu.be/vyciUXk_1hI?...
Meet the Man Behind the Pan-Mass Challenge in Massachusetts
YouTube video by TODAY
youtu.be
August 1, 2025 at 10:00 AM
This weekend, for the 15th straight year, I'm riding 186 miles over two days across Massachusetts to raise funds for the Dana Farber Cancer Institute. This terrific Today Show segment explains what it's all about. #PMC2025
youtu.be/vyciUXk_1hI?...
youtu.be/vyciUXk_1hI?...
Same
Right now it's basically just the @capitalweather.bsky.social and the Post's polling team that is keeping me as a subscriber.
And, uh, some personal news: This is also my last column for The Post. I was offered and accepted a buyout.
To answer one possible next question, I'm not sure what's next save taking some time off. If you want, you can enter your email at pbump.net and I'll let you know when I figure it out!
To answer one possible next question, I'm not sure what's next save taking some time off. If you want, you can enter your email at pbump.net and I'll let you know when I figure it out!
July 17, 2025 at 6:30 PM
Same
What a loss. Very few do data journalism as well as @pbump.com. Looking forward to following his work wherever he lands
And, uh, some personal news: This is also my last column for The Post. I was offered and accepted a buyout.
To answer one possible next question, I'm not sure what's next save taking some time off. If you want, you can enter your email at pbump.net and I'll let you know when I figure it out!
To answer one possible next question, I'm not sure what's next save taking some time off. If you want, you can enter your email at pbump.net and I'll let you know when I figure it out!
For my column today, I wrote about how Trump leveraged America's collapsing trust in institutions — and how his second term has accelerated that collapse. Gift link: wapo.st/3IzN4QA
July 17, 2025 at 6:29 PM
What a loss. Very few do data journalism as well as @pbump.com. Looking forward to following his work wherever he lands
Reposted by Mark Blumenthal
But follow @gelliottmorris.com for approval averages
It's a real shame that ABC shut down 538 right now...
April 6, 2025 at 10:32 PM
But follow @gelliottmorris.com for approval averages
Ten-year-old (!) memory, with a bonus: the workings of the roll-your-own Pollster chart
taking this opportunity to celebrate perhaps one of the silliest survey experiments I've ever conducted
www.huffpost.com/entry/obama-...
www.huffpost.com/entry/obama-...
March 19, 2025 at 1:31 PM
Ten-year-old (!) memory, with a bonus: the workings of the roll-your-own Pollster chart
Nope. Not nearly enough.
Nor that it’s a budget IN BALANCE funded by income, property and sales taxes paid by DC residents
Nor that it’s a budget IN BALANCE funded by income, property and sales taxes paid by DC residents
I don’t think enough attention has been put on how services for DC residents are going to be destroyed they have to find 1$ billion dollars in their budgets from schools, police, fire, parks etc
March 13, 2025 at 11:27 PM
Nope. Not nearly enough.
Nor that it’s a budget IN BALANCE funded by income, property and sales taxes paid by DC residents
Nor that it’s a budget IN BALANCE funded by income, property and sales taxes paid by DC residents
Aaron was similarly valuable at HuffPost/Pollster during his tenure there from 2011-2015. Agree: Hire him!
Aaron Bycoffe was 538's secret sauce. He combined advanced dev & technical skills with a savvy eye for the user experience, making sure all our interactives worked as seamlessly as they did. Hire him. www.linkedin.com/in/aaron-byc...
March 6, 2025 at 8:44 PM
Aaron was similarly valuable at HuffPost/Pollster during his tenure there from 2011-2015. Agree: Hire him!
Ok, so lots of bad news lately, but this I’m *very* excited about
March 6, 2025 at 4:22 AM
Ok, so lots of bad news lately, but this I’m *very* excited about
Reposted by Mark Blumenthal
As reported, the entire staff of 538 was laid off this morning. This is a severe blow to political data journalism, and I feel for my colleagues. Readers note: As we were instructed not to publish any new content, all planned updates to polls data and averages are canceled indefinitely. Huge loss :(
March 5, 2025 at 4:28 PM
As reported, the entire staff of 538 was laid off this morning. This is a severe blow to political data journalism, and I feel for my colleagues. Readers note: As we were instructed not to publish any new content, all planned updates to polls data and averages are canceled indefinitely. Huge loss :(
Reposted by Mark Blumenthal
Important news that should not get lost in the takes about last night's speech. The team at FiveThirtyEight -- the new team, with @gelliottmorris.com leading the analytics side but also with excellent reporters -- has done truly excellent work. A short appreciation thread
man ABC completely blew it on this. absolute fumble. it feels like it's been the end of an era for most of an era but this is kind of devastating anyway.
March 5, 2025 at 1:52 PM
Important news that should not get lost in the takes about last night's speech. The team at FiveThirtyEight -- the new team, with @gelliottmorris.com leading the analytics side but also with excellent reporters -- has done truly excellent work. A short appreciation thread
It’s more than ironic we learn of the coming demise of Fivethirtyeight on the day their Trump approval tracker turns net negative. https://projects.fivethirtyeight.com/polls/approval/donald-trump/
/1
/1
March 5, 2025 at 12:55 PM
It’s more than ironic we learn of the coming demise of Fivethirtyeight on the day their Trump approval tracker turns net negative. https://projects.fivethirtyeight.com/polls/approval/donald-trump/
/1
/1
This. Every word of this.
Sometimes folks treat 538 as synonymous with the forecast models, but
a) the polling data they compiled was a huge undertaking that underpinned *so much other work* both inside and outside
b) they did a phenomenal amount of nuanced, thoughtful writing about politics and public opinion
a) the polling data they compiled was a huge undertaking that underpinned *so much other work* both inside and outside
b) they did a phenomenal amount of nuanced, thoughtful writing about politics and public opinion
ABC News is killing off 538, which is incredibly stupid but means there will be a lot of really exceptional people on the job market.
March 5, 2025 at 4:22 AM
This. Every word of this.
Such a waste. Elliott and his crew did great work.
ABC News is killing off 538, which is incredibly stupid but means there will be a lot of really exceptional people on the job market.
Disney to Cut Nearly 6% of Staff Across ABC News, Disney Entertainment Networks
About 200 employees are being let go at Disney’s ABC News Group and Disney Entertainment Networks unit, people familiar with the matter said.
www.wsj.com
March 5, 2025 at 4:21 AM
Such a waste. Elliott and his crew did great work.
Reposted by Mark Blumenthal
Well… of course it is!
[mumble] years later and the best way to track down '00-'10s era survey data is occasionally still by booting up the good ol' Internet Archive version of pollster dot com
March 2, 2025 at 1:03 AM
Well… of course it is!
@skeetsapp.com Is this a known issue? Someone I follow responds to a reply to their post, then either blocks that person or that person deletes their post, so the reply shows up in my feed even though I've set show replies to "no."
February 13, 2025 at 8:18 PM
@skeetsapp.com Is this a known issue? Someone I follow responds to a reply to their post, then either blocks that person or that person deletes their post, so the reply shows up in my feed even though I've set show replies to "no."
WTF @nytimes.com? On a @jamellebouie.net *op-ed* column?!?
This “survey” is what surrender looks like:
This “survey” is what surrender looks like:
January 28, 2025 at 2:37 PM
WTF @nytimes.com? On a @jamellebouie.net *op-ed* column?!?
This “survey” is what surrender looks like:
This “survey” is what surrender looks like:
Los Angeles friends: Visiting your fair city and watching these planes in formation spelling out what looks like “…weeknights on ABC 7.” LA thing? Never seen before
January 1, 2025 at 10:25 PM
Los Angeles friends: Visiting your fair city and watching these planes in formation spelling out what looks like “…weeknights on ABC 7.” LA thing? Never seen before