Listen on some level I can certainly understand the absolving nature of voting for someone who is not ideal. Sure, at least u did not vote for that wicked person.
In reality though...we offer no future choice to those that will vote in future...we provide for an avenue of confusion and obfuscation.
In other words by voting for a man or supposed republican like Mitch you are indeed insuring the future relevance of the Democratic party.
That is logic..
Long term strategy is worthless if you are in danger of losing the war.