Donors, particularly more recent converts to Team Rubio who crossed over from former Florida Gov. Jeb Bush’s camp, are holding onto their wallets until next week’s primary.

But many also see little reason for Rubio to drop out before then.

“It’s Florida or bust,” said Nick Iarossi, a prominent Rubio fundraiser in Tallahassee. “We’ve already invested millions of dollars, thousands of man hours. Why get out six days before?”

Rob Stutzman, a GOP operative in Sacramento who was backing Bush and is now fundraising for Rubio, said the campaign is “fully invested, they’re fully committed to Florida, and, frankly, they shouldn’t stop before then, before the Florida vote.”