Well maybe concentrate on the best of her- at least she has a better, and a best.You've always been a savage and vindictive woman...
I agree that character is relevant, and Don is a fiend of the lowest order, but I'm not comfortable in dismissing the worst of Harris as a strategic gambit.
Voting for someone in the hope or expectation that they'll come good later on seems fraught, especially if there is nothing in their current iteration which reassures you about the future.