I haven't seen many politicians campaigning for nuclear power, and you can't deal with CO2 emissions without that (base load problem, etc), so that's pretty hard to do.

First step is just agreeing there is a problem and put it on top of the agenda though. Politicians are supposed to set goals and find incentives; the "how" part (batteries vs. hydro vs. new tech for power storage vs. nuclear) can be more up to the market. A politician who is scared of climate change will at least be easier to convince to approve a new nuclear plant in (relative) silence even if they are not actively campaigning on it as a solution. And properly taxing emissions will make nuclear plants more competitive, again without a politician having to explicitly aim for it or campaign for it.

Reminder: 2018 US congress midterms are approaching

In a year and a half. Approaching, but not immediate unfortunately.