Amy Walter: This is something clearly the Biden campaign is seeing too. This isn't just in public polls.There's a reason that the vice president has been spending as much time as she has been at historically Black colleges. The president himself has been out speaking to Black voters in key swing states now for months, that this slippage is as much about enthusiasm as anything else.As you're seeing, while Trump has picked up some support, there are a lot of people that — who are sitting on the sidelines, who are saying, maybe I'm going to vote for a third-party candidate, or maybe I'm going to stay home.And when you talk to Democratic strategists, what they will tell you is, the real gap, those voters who are really deciding whether they're going to vote or not, third party, maybe Trump, overwhelmingly are younger voters. That's the biggest — the generation gap, this one Democratic strategist said, is the real significant driver right now of Black vote, different between, say, 2020 or 2...
