Only a moral person can distinguish between a better and a worse decision. So you’re faced with two possible choices:
1. Evil.
2. Evil squared.
You have three choices: 1, 2 or choose neither and default to whichever happens. What do you do?
Sorry, but I don’t believe in this binary decision scenario you set up here...
Supporting evil is supporting evil. You may feel this is justifiable or comfortable. I do not.
The “right” to vote is not a mandate to support evil. You have many “rights” which you do not necessarily exercise.