That’s more than halfway to the 28 votes Trump detractors would need to produce a minority report on their proposal, which would give it a vote on the convention floor. At least four more delegates are undecided, while the positions of another 24 remain unknown and 68 have either gone on-record as opposed or their history of support for Trump suggests they would be.

The effort could get a boost from Utah Sen. Mike Lee and his wife, two delegates on the Rules Committee that both the Trump campaign and Free the Delegates operatives expect to vote in favor of the conscience clause. Lee was an early endorser and remains a good friend of Sen. Ted Cruz, and remains fiercely critical of the presumptive GOP nominee.

Lee’s support could give cover to undecided delegates wary of backlash from GOP leaders and sway some undecideds.