Republican senators broke with Florida Gov. Ron DeSantis over his remarks that defending Ukraine against Russian aggression wasn't a "vital" U.S. interest.

Republicans hold a dour outlook on the country and prioritize finding a 2024 nominee who shares their views on major issues over one with a strong chance to defeat President Joe Biden, according to a new CNN poll of Republicans and Republican-leaning independents conducted by SSRS. The survey suggests sharp divisions within the potential GOP electorate by age, education, ideology and geography, as well as between Donald Trump backers locked into their choice and a more movable group in search of an alternative.

Florida Gov. Ron DeSantis will make his first appearance in Iowa on Friday, an unmistakable flirtation for a top-tier Republican presidential contender that brings his expected bid for the White House a step closer to reality.

Republicans face a likely crowded field for the chance to challenge President Biden, who is expected to announce he's running for reelection. Here's who's in and who's thinking about a 2024 run.