That's true if you live in solidly blue or red state, but then why not vote for a third party candidate more aligned to your convictions? Or not voting at all, saving time?
I think pwno is proposing that we do it precisely because it doesn't align with our convictions. (He might advise Trump supporters to vote for Clinton.)
I'm sure I remember reading, but can't now find, an anecdote from Eliezer back in the OB days: he was with a group of people at the Western Wall in Jerusalem, where there's this tradition of writing prayers on pieces of paper and sticking them in cracks in the wall, so as a test of the sincerity of his unbelief he wrote "I pray for my parents to die" and stuck that in the wall. Same principle.
(Per...
If there's such a small chance of your vote making a difference in the election, you should be comfortable voting for trump.