If you can do activism, do it around policies in a principled manner, and steer clear of elections.
If you can do funding, fund principled activist organizations, not political candidates.
If you must divert your energies and money into elections, I have a recommendation for how best to do it (not that you’ll necessarily listen to me, having already ignored my first two paragraphs, but what the heck):
Part of getting better governance out of Washington, D.C., will have to come from shifting power back from the White House to the Congress and putting better people into the Congress.
The coming election for the White House has, as always, an even worse lesser-evilism problem than it had the time before. The lesser evil is a bit too evil for a bit too many people. Some want to pinch their nose and go for it anyway. Others want to try for something better next time by, for once, withholding votes that have certainly not been earned. Others would support lesser-evil voting if not for the fact that so many who engage in lesser-evil voting develop symptoms of lesser-evil thinking and behaving and cheerleading on a long-term basis.