Yesterday I said that the Republicans have a built in advantage over Democrats because they are disciplined partisans who would vote for Satan (R) is he was running against Jesus (D).
Another advantage they have is that they think nothing of brazenly lying if they think it will advance their cause.
Democrats feel constrained by the truth. To make matters worse, the truth is infrequently black & white, but there is often nuance and depth to the truth that makes it hard to explain in one or two flippant sentences.