As the debate got underway, Burgum was seen standing without his crutches on the presidential primary stage. Just one day ago, on Tuesday, the North Dakota governor tore his Achilles tendon and was seen just hours ago using crutches.

--ABC News' Kelsey Walsh

Christie just made an electability argument — that he was elected as a Republican in the blue state of New Jersey. (Specifically, he won the 2009 gubernatorial election by 4 percentage points a year after Obama won the state by 16.) The only problem is, only 25 percent of Republicans said the ability to beat Biden was one of the most important factors to their vote, according to a recent FiveThirtyEight/Washington Post/Ipsos poll.
-Analysis by Nathaniel Rakich of FiveThirtyEight

Tim Scott was just asked about government spending. In a March poll by AP-NORC, 88 percent of Republicans said that the federal government is spending too much. However, in the same survey, a majority of Republicans thought the government was spending too little on some key areas, including border security (85 percent), law enforcement (67 percent), infrastructure (61 percent), Social Security (57 percent), military (57 percent) and education (52 percent).
-Analysis by FiveThirtyEight

I wrote about this earlier, but high consumer prices are probably the biggest way that Americans understand the economy. Biden's trying to make the case that overall the economy is on the upswing, and he has some data points to back him up. And there's not a lot the president can do about inflation. But voters have been sour on the economy since Biden took office. Fifty-three percent of Republican voters said getting prices under control was a top issue in a FiveThirtyEight/Washington Post/Ipsos poll released today.

— Analysis by Monica Potts of FiveThirtyEight

In 2016, Trump was the ultimate outsider candidate — he didn’t receive a single endorsement from a sitting senator, representative or governor until after he had already won New Hampshire, South Carolina and Nevada. This year, though, he already has a ton of elite support. According to the FiveThirtyEight endorsement tracker, he has 343 endorsement points — nearly eight times as many as DeSantis, who is in second place.

The 2016 race notwithstanding, endorsements have historically been very predictive of who eventually wins a party’s nomination. The candidate with the most FiveThirtyEight endorsement points on the day before the Iowa caucuses has won 11 of the last 17 Republican and Democratic primary fights without an incumbent president. And when that candidate has a dominant endorsement lead, they win even more often: Endorsement leaders who had collected more than 15 percent of the estimated available endorsement points before Iowa won nine times out of 10. And Trump already has 17 percent of all available endorsement points with five months left until Iowa.

-Analysis by Nathaniel Rakich of FiveThirtyEight