It literally does not MATTER if YOU agree with the calculus or not. YOU are ALSO not "millions of voters."
The job, is to get elected. You do what you have to win the election.
Your leaders decided funding and enabling a genocide, hugging it out with cops, passing fascist immigration laws, and hanging out with the Cheney clan, were MORE IMPORTANT than getting elected.
Don't get pissed off at people who realized that and said "naw." This was WHOLLY fucking predictable.