Just take some time to consider how TDT applies to decision in real life. You will get it, I'm sure.
The way it applies in real life, is that all the people like me will choose not to vote, and to work together for a better, less inefficient system, which will give us much more utility than if we had all chosen to vote.
If there's such a small chance of your vote making a difference in the election, you should be comfortable voting for trump.