This is a fart in a whirlwind, IMO. Nearly everything he campaigned on was an echo of Trump and he’ll get exposed when he votes with Pelosi when he’s in the House. Some of his voters will realize they’ve been scammed. Throw in the fact the district is totally redrawn for the fall election and he’ll have to move to stay in the district, then the whole thing really loses meaning.
Besides there is this too:
This guy will not be forced to vote to expose his leftist leanings until after the 2018 elections. His vote would make no difference at this point, so he will get freedom to pretend he is more centrist.
After 2018. All bets are off. He goes far left or he gets the stink eye. He knows that too.