I would really like to see some form of electoral reform passed that would reduce spoiler effects, make third party movements more viable, and change the incentives for politicians in elections (e.g. instant runoff voting as endorsed by https://fairvote.org/ or https://cfer.org/ ; or proportional representation ).
Today I learned: Electoral reforms are one of the goals for the Forward Party and the Common Sense party. If you're a voter in California, you can help them with this by changing the party affiliation on your voter registration to the Common Sense Party to help them get recognition (they need 72,000 members).
* https://home.forwardparty.com/volunteer_find_your_state
* https://www.cacommonsense.org/