This year, it’s a choice between a person who’s funding a genocide while applying (admittedly limited) political pressure to restrain Israel, and a person who’s publically stated that he supports the genocide and thinks it isn’t going fast enough, and who would increase funding to increase the speed of the genocide.
By not voting for the former, you are implicitly endorsing the latter (saying, he’s just as hood as the former), and are culpable if he is elected - the definition of moral evil includes inaction. Sitting this one out because you like neither candidate is a moral evil, since one candidate is categorically worse (genocide-wise) than the other.