You can find the voting tallies on their respective government website. Click on a vote and it will list each senator/ house rep what they voted.
Senate: www.senate.gov/legislative/...
House: clerk.house.gov/Votes

Yeah, because we all remember how ignoring user feedback and censoring adult content went well for Tumblr. On top of being hostile to the creative freedom of artists, this will likely just lead to people not labeling their posts to avoid bans. This change makes the site worse for everyone :(