As the six-month sprint to the Iowa caucuses begins, the sprawling field of Republican presidential candidates is facing growing pressure to prove they can become serious challengers to former President Donald Trump.
The urgency is particularly acute for Florida Gov. Ron DeSantis, who entered the race in May with expectations that he would quickly become Trump's top rival. For now, however, he has struggled to generate the level of enthusiasm that Trump commands from the GOP base, contributing to uncertainty that DeSantis will become the threat to the former president that he was once billed to be.
