 UVA political analyst Larry Sabato. I think the Republican convention in some ways has brought the reality of yet another Trump presidency into focus. And Democrats are just apoplectic. And that's being communicated to Joe Biden. A new AP-NORC poll finds two-thirds of Democrats think the president should drop out. New information on the 20-year-old who tried to kill former President Trump at a campaign rally Saturday. CBS's Meg Oliver is in Butler, Pennsylvania.