WASHINGTON — President Joe Biden’s ability to run for reelection faced crucial tests Thursday as he prepared for questions at a highly anticipated press conference and his team met privately with skeptical senators on Capitol Hill. More House Democrats called for him to exit the race, and he made a notable flub ahead of the press conference.

Biden is seeking to show during his whirlwind day with world leaders at NATO, and the evening press conference, that he is up for another four years. Voters are watching, and elected officials are deciding whether to press for another choice.