Trump Tries to Turn the G.O.P. Race Into a Vice-Presidential Casting Call

Donald J. Trump has won just a single nominating contest, but his potential running mates already outnumber his presidential rivals on the campaign trail.

As he pursues a victory over Nikki Haley in New Hampshire that would send him on a glide path to the nomination, Mr. Trump seems to be holding casting calls for possible vice-presidential contenders onstage at his rallies and at other events.

His goals are clear: Show off the sheer breadth of his institutional support in the Republican Party. Inject a sense of inevitability into the race. And, of course, see which underling will butter him up the most.

On Friday alone, Senator Tim Scott of South Carolina, Senator J.D. Vance of Ohio and Representative Elise Stefanik of New York rallied supporters for him. Ms. Stefanik held a second event on Saturday.

The presence of all three, each of whom maintains a close relationship with Mr. Trump, generated headlines and fired up his base.

But joining Mr. Trump’s ticket can come with risks. Former Vice President Mike Pence twice ran with Mr. Trump, but his refusal to violate the Constitution to help overthrow the 2020 election led to Trump supporters storming the Capitol and threatening to hang him. Mr. Pence and his family were forced into hiding inside the Capitol to avoid the mob.

Mr. Scott’s stock seemed to rise with Mr. Trump after his endorsement of the former president on Friday, a move that showed the genial senator’s fealty and his surprising capacity for ruthlessness. In choosing Mr. Trump, Mr. Scott dealt a brutal rejection to Ms. Haley, his home-state compatriot and the woman who appointed him to the Senate.

Mr. Scott’s remarks at the Trump rally on Friday in Concord projected a stirring energy often lacking in own