Voting is easy and marginally useful, but it is a poor substitute for democracy, which requires direct action by concerned citizens.
Richard Nixon was not the lesser evil, he was the greater evil, but in his administration the war was finally brought to an end, because he had to deal with the power of the anti-war movement as well as the power of the Vietnamese movement. I will vote, but always with a caution that voting is not crucial, and organizing is the important thing.
When some people ask me about voting, they would say will you support this candidate or that candidate? I say: "I will support this candidate for one minute that I am in the voting booth. At that moment I will support A versus B, but before I am going to the voting booth, and after I leave the voting booth, I am going to concentrate on organizing people and not organizing electoral campaign."