Discussions within the campaign have recently focused on Vance and Rubio, with Burgum also in the mix. Trump asked about other names last week, according to people familiar with his thinking.
Vance’s absence from the rally — which is taking place not far from the border in Ohio — is particularly notable given that some Republicans had speculated that Trump would announce his pick at the rally. Trump held a rally in Miami earlier this week, at which Rubio spoke.
Trump has also repeatedly indicated that he is in no hurry to announce his choice, even as his campaign aims to decide on his running mate by Monday, the first day of the Republican Party convention.
In an interview on Friday, Trump compared the selection process for his running mate to a “very advanced version of ‘The Apprentice.’”
He added in that interview, on “The Clay Travis & Buck Sexton Show,” that he “would love to do it at the convention.”