 All right, Karen, thank you to 644 on Wall Street. Right back to our top story this morning. President Biden has dropped his reelection bid and backed Vice President Kamala Harris to take his place at the top of the Democratic ticket. Now Harris faces an all-out sprint to get her fellow Democrats in line, while Republicans, led by former President Donald Trump, say the current president should step away not just from the campaign trail, but from the White House entirely. Joining us now, Bloomberg News Politics Editor Laura Davison. Laura.