How to influence the US election towards climate action
If you’re a US citizen, no matter where in the world, start by making sure you’re registered to vote. Many districts are gerrymandered, so you’ll want to register as the party that’s likely to win congressional and/or state legislative districts where you live, and vote in that party’s primary.
In addition to voting, you’ll want to influence politics beyond that. Your local races are a good place to start; cities and states control local land use and things like building codes.
Biden rejoined the Paris Climate Agreement, revoked the Keystone Pipeline permit, created a 13 million acre federal petroleum reserve for Alaskan wildlife, greatly increased oil site lease cost, signed $7B in solar subsidies, and enacted the Inflation Reduction act to support clean energy.
There's a much more extensive list of what Biden has done here — but you can't get it outside the paywall because the last was started before the Washington Post started doing gift links.