I liked Nathaniel’s take that Bloomberg may be making Biden look more liberal to viewers. Bloomberg is doing the dirty work of attacking Sanders from the right, so Biden doesn’t need to fill that role, which may be freeing for him. For the most part, Biden has continued to look quite sharp tonight. He fumbled a bit on the question about climate change policies, but he was arguably smart later when he didn’t take the bait when Lester Holt asked him what he thought about “socialist candidates.” Instead, he talked about his background as “the poorest man in Congress” and the fact that he thought taxes should be higher on people like Bloomberg and that, in his classic way of saying it, “the middle class is getting killed.”