The other potential VP picks who spoke out this weekend all downplayed their chances or seemed less than enthused about the presumptive GOP nominee. Cotton in fact declined to say why Trump is a better candidate than Clinton, saying that Trump "make the case for himself," despite Trump's tweet. Ernst's meeting with Trump was a "last-minute" surprise, according to a source close to the senator, and she said only in a statement that she had a "good" meeting with Trump where they discussed what she hears from Iowans on her travels. She said she plans to continue to "share my insights" with the candidate on the economy and national security.
And Gingrich, speaking at the Aspen Ideas Festival on Saturday, called all the chatter around his chances "wild speculation." Still, he proved a strong surrogate for Trump, touting the candidate's disruptive presence in the political sphere and telling NBC News that the fact Trump's being considerably outspent on the airwaves by Democrats won't be an issue for him.
Trump's pick will be closely watched, as many Republicans are hoping his vice president will not only help balance out the ticket politically but balance out Trump personally.
In addition to strengthening Trump's support in key swing states or among untapped demographic groups, skeptics are hoping he'll pick a candidate who can be a steady hand on the stump, one with strong conservative credentials and a long history with the GOP.
Ron Bonjean, a longtime GOP strategist, said Trump's efforts to build out a general election campaign in recent weeks have been encouraging but not enough to fully ease the concerns many Republicans still have with him.
"If he were to pick a vice president that is competent, has experience both in office and with the party and could relate to Americans, that would go a long way," he said.