FILE - Sen. Sherrod Brown, D-Ohio, speaks during a hearing on Capitol Hill in Washington, March 22, 2023. Jittery Democrats seeking to hold onto Senate seats are watching the drama over Biden nervously. Even candidates who seem to be in a strong position are walking a fine line between loyalty to the president and their own political survival. Brown has offered little public support for the president since the debate. (AP Photo/Manuel Balce Ceneta, File)