I understand why many vote for the lesser of two evils. I used to do the same thing. I think most of the people voting for Republicans or Democrats have good intentions. I think when we vote for evil, even if it's a lesser evil, it affects us, though. Maybe subconsciously.
I understand the third parties have little chance of winning. I don't believe it's impossible, though. If it's meant to happen, it will.
I need to be true to myself when I vote, even if it's not popular. I think there's more to it than just the numbers. Our attitudes and feelings toward these things affects us all, on a spiritual level, in ways we may not fully understand or appreciate.