For anti-Trump Republicans, it could all come down to New Hampshire

MAGA Inc., a super PAC backing Mr. Trump, has attacked Ms. Haley for her support for raising the gas tax when she was governor of South Carolina in 2015, though she also called for a corresponding income tax cut. The group spent more than $2.5 million on the ad and ran it exclusively in New Hampshire. Another ad from the group focuses on immigration. A super PAC official said the super PAC would spend a total of $1.3 million per week through Primary Day.

The negative advertising appears to be reaching some voters. Pete McGuire, 54, drove about 30 minutes to see Mr. Christie at the restaurant in Amherst. He said he was actively looking for a Trump alternative and was considering Mr. Christie over Ms. Haley.

‘You see all those commercials about her vote for the gas tax, where she says: we will never do the gas tax, never! And next time she says, let’s do the gas tax,” Mr. McGuire said. “So she kind of shot herself in the foot.”

From a headquarters in downtown Manchester that is far larger than the Trump campaign’s 2016 operation, the former president’s team has recruited more than 200 city leaders and amassed more than 60 endorsements across the state. On Sunday, volunteers trudged through the snowstorm to knock on doors.

At his event in Amherst, Mr. Christie nodded to what appears to be the sentiments of many American voters in 2024.

“If you’re looking for the perfect candidate, believe me,” he said, “you’ll be looking forever.”

Jonathan Swan contributed reporting from Des Moines, Jasmine Ulloa from Rye, Londonderry and Milford, NH, and Neil Viddor from Amherst, NH