I have a rule: the first candidate I see doing "negative campaigning" like this loses my vote.
I don't give a shit what party he's in. That simply doesn't matter to me.
When I cast my ballot, I'm voting for someone, not against someone. If the best way you can convince me to give you my vote is to tell me about all the rotten shit you think your opponent has done, you've failed. What you've actually done is convinced me that there's no reason to vote for you.
You're not going to get my vote by telling me what's wrong with your opponent. You're going to get my vote by telling me what's good about you.
This clown has failed miserably in that regard...