A majority (56 percent) of Republicans in a recent TIPP Insights/Issues & Insights poll feel that the charges against former President Donald Trump in both the classified documents case and the investigation into the Jan. 6, 2021 attack on the U.S. Capitol are political harassment by the Biden administration. And in an August poll from Morning Consult, 69 percent of Republicans felt the 2020 election indictment was primarily motivated by a desire to damage Trump’s political career, rather than by evidence that he committed a crime.
-Analysis by FiveThirtyEight

Six Republican candidates raised their hands when asked if they'd support Trump as the party's nominee if he were convicted and still went on to win. Two, Christie and Hutchinson, did not. Christie wagged his finger and criticized Trump, saying it was "unbecoming" to behave as Trump had. The crowd booed Christie extensively, to the point that Baier has to shush the crowd like a schoolteacher, telling them they need to "get through" this part. -Analysis by Geoffrey Skelley of FiveThirtyEight

Trump has largely been absent from this debate so far. In the first half, he was only mentioned five times by name, although Hutchinson did take a swipe at “a former president who is under indictment.” But now the moderators are asking about his legal troubles directly.
-Analysis by Nathaniel Rakich of FiveThirtyEight

The moderators finally turn to discussing Trump, who has skipped the debate for a (pre-recorded!) interview with Tucker Carlson. It's clearly intentional that they waited this long — Trump is ahead by 37 points in our national polling average, so he's an obvious elephant (not) in the room. In some ways the entire debate is moot because of that lead. Remember that these candidates are running for second and third place right now, not first.

-Analysis by G Elliott Morris of FiveThirtyEight