Here are three interesting pages on the bitcoin wiki:
P2SH votes - https://en.bitcoin.it/wiki/P2SH_Votes
Segwit support - https://en.bitcoin.it/wiki/Segwit_support
Covenant support - https://en.bitcoin.it/wiki/Covenants_support
All three gauge developer support for various fork proposals around at the time. Kind of like a vote.