Trump maintains a lead of 33 percentage points over Haley, his nearest competitor in New Hampshire, according to the most recent polls. Haley appears to have benefitted the most from the first debate in the state, gaining 8 points compared to her average result on Aug. 23. No other candidate’s average has moved by more than 3 points, either up or down.

According to a September survey from the University of New Hampshire/CNN, only 36 percent of likely New Hampshire primary voters have definitely decided who they plan to vote for. Thirty-eight percent said they are leaning toward someone, and 24 percent said they are still trying to decide. Trump’s voters, however, were much more firm on their choice: Sixty-nine percent said they have definitely decided, compared with 31 percent for Ramaswamy and less than 20 percent for the other candidates.

When it comes to policy, New Hampshire Republican primary voters seem particularly concerned about economic issues, according to a September survey by NMB Research for the Competitiveness Coalition and the Josiah Bartlett Center for Public Policy. Given a list of issues that have been raised in the primary, 32 percent said the most important issue to them would be reducing federal budget deficits by cutting spending; 21 percent said it would be spending less on green energy by repealing parts of the Inflation Reduction Act; and 18 percent said it would be keeping taxes low. The only other issue to reach double-digit support was deploying the U.S. military to the Mexican border to stop illegal drugs from entering the country, which was named as most important by 19 percent of voters.

—Analysis by 538

We at 538 have been tracking how many days each candidate has spent campaigning in each state. And some interesting patterns have emerged:
Some candidates — like Ramaswamy and Haley — have really focused on retail politics, while others — like Trump and Scott — have held relatively few campaign events. (Perhaps their strategy is more reliant on TV ads.)>
Hutchinson, DeSantis and Pence have focused their campaigning on Iowa, whose culturally conservative and religious GOP electorate may be a good fit for their politics. By contrast, Christie and Hurd have focused their efforts on New Hampshire, whose large population of independent voters may be more receptive to their anti-Trump message.
The candidates are largely ignoring Nevada, even though it’s the third state on the primary calendar. Through Tuesday, the 10 major candidates have spent a total of 162 campaign days in Iowa and 124 in New Hampshire, but only four in Nevada!

—Analysis by Nathaniel Rakich of 538

Trump maintains a lead of 32 percentage points over his nearest competitor in Iowa, according to the latest polls. Trump and Haley have both improved their polling by about 6 points since the August debate, while DeSantis’s numbers remain virtually unchanged.

According to an early September Emerson College poll, 79 percent of likely caucusgoers who say they plan to vote for Trump also say they are definitely going to vote for him. By contrast, voters who support other candidates say they might change their mind: Seventy-one percent of Scott supporters, 70 percent of Haley supporters, 56 percent of DeSantis supporters and 46 percent of Ramaswamy supporters indicated they could vote for a different candidate.

And in a September survey from Beacon Research/Shaw & Co. Research/Fox Business, 46 percent of likely Iowa caucusgoers list Trump as their first-choice candidate, but only 7 percent list Trump as their second choice. This may indicate that consolidation in the rest of the Republican field could significantly reduce Trump’s lead in the state, as few voters who aren’t already indicating support for Trump seem interested in voting for him.

—Analysis by 538

—Galen Druke of 538

This is False.

Pence has used this 90 percent drop statistic many times, but has never explained where it comes from.

When the COVID-19 pandemic started, immigration drastically dropped worldwide as governments enacted policies limiting people’s movement. In the U.S., Trump instituted Title 42, a public health policy that authorized the Border Patrol to immediately return most immigrants back to Mexico. The increased use of this policy decreased the use of other programs, including "Remain in Mexico."

U.S. Customs and Border Protection during the pandemic also adopted a new way of reporting migrant encounters. Before the pandemic, it only reported enforcement actions under immigration law; its data during the pandemic includes actions taken under both immigration law and the public health policy. Therefore, 2020 data isn’t entirely comparable to pre-pandemic numbers.

Accounting for challenges in data comparisons, our review found an increase of 300 percent in illegal immigration from Trump’s first full month in office, February 2017, to his last full month, December 2020.

One way to get close to Pence’s alleged 90 percent decrease in illegal immigration is by comparing data from May 2019, the month during the administration that had the highest apprehensions, to April 2020, the month with the lowest enforcement actions in calendar year 2020.

But that’s a severely cherry-picked time period.
-Analysis by Aaron Sharockman, PolitiFact