MANCHESTER, N.H. — When Shawn and Virginia Dumais of Anderson, S.C., missed Donald Trump’s visit to their home state, they decided to drive 1,100 miles (nearly from the Georgia border) to attend his final rally here ahead of the New Hampshire primary.

“We’re die-hard supporters,” Shawn said as he waited, along with thousands of others, for Trump to take the stage at the Verizon Wireless Arena here. “We’d go everywhere he would if I had the money.”