What Went Down On Night Two Of The First Democratic Debates

One thing to watch for tonight is age: polls to date have made it clear that all else equal, Democratic voters prefer a candidate who is younger than 70. And with a wide age range on display tonight — at 76, Joe Biden is more than twice as old as 37-year-old Pete Buttigieg — I think age gaps are an important subtext to the debate. So, apparently, does Rep. Swalwell.