 Live from NPR News in Washington, I'm Dave Mattingly. President Biden is urging Democrats to get behind Vice President Harris now that he's decided to end his reelection bid. Here's NPR's Mara Liason. She was not a great candidate in 2020. She dropped out before any votes were cast. But Democrats do feel this is their last best hope to defeat Trump or barring that to at least flip the House and stop a complete Trump takeover of the government.