Minnesota GOP officials say the Cruz campaign is working to win over delegates, with a particular focus on those who are unbound. “There have been a number of people, either via e-mail or at [local] conventions, campaigning specifically to be a national Cruz delegate,” says Chris Tiedeman, the state’s Republican national committeeman. “And there have been a number of them going to other conventions, other than their own local convention, to start campaigning for those spots now.”

As it was in Colorado and North Dakota, which both elected unbound slates of delegates favorable to Cruz after forgoing primaries and caucuses entirely, it appears that the Trump campaign is being outmaneuvered on the ground in Oklahoma and Minnesota. Several Minnesota GOP officials say they don’t know who is leading the pro-Trump effort in their state, and Tiedeman says there’s little to suggest the real-estate mogul is doing anything to secure unbound delegates there. “That doesn’t mean it’s not happening, but I haven’t seen it anywhere I’ve been,” he says. “And I’ve been out and about quite a bit.”

There’s a small chance Rubio could bind Minnesota and Oklahoma delegates to him on a first ballot — that is, in the unlikely event his name appears on the ballot. But even if one assumes that the RNC’s Rule 40(b) is amended to place Rubio in contention, Rubio supporters say it’s still unlikely he will appear on the ballot. (The rules currently require a candidate to secure a petition featuring the signature of a majority of the delegates from eight states in order to be nominated, and Rubio won only four states and territories.) That’s because collecting the signatures of a majority of the delegates in the required number of states would take a strong, organized effort on the ground in Cleveland, and Rubio is unlikely to pull it off.