Bush 'disappointed' Haley didn't endorse him

Jeb Bush expressed disappointment that South Carolina Gov. Nikki HaleyNimrata (Nikki) HaleyWill Trump ignore the Constitution and stay in White House beyond his term? Trump taps ex-State spokeswoman Heather Nauert to help oversee White House fellowships Conservatives slam Omar over tweet on Gaza violence MORE is backing presidential rival Sen. Marco RubioMarco Antonio RubioAnother VPOTUS tries for POTUS: What does history tell us? Tensions swirl around Iran as administration to brief Congress Tensions swirl around Iran as administration to brief Congress MORE (R-Fla.).

"I'm disappointed," the former Florida governor said after a campaign stop in the Palmetto State, according to multiple tweets from reporters.

The campaign praised Haley in a statement and predicted she'd rally behind Bush when he wins the GOP nomination.

ADVERTISEMENT

"Nikki Haley is a talented Governor, Jeb is proud to have worked with her over the years and respects her decision," spokeswoman Allie Brandenburger said in a statement.

"That said, this race is about Jeb Bush being the only candidate in the field with a proven conservative record, detailed plans and the ability to defeat Hillary ClintonHillary Diane Rodham ClintonNevada Senate passes bill that would give Electoral College votes to winner of national popular vote 2020 Dems break political taboos by endorsing litmus tests Iowa Democrats brace for caucus turnout surge MORE, which is what this party and country needs."

Haley's endorsement comes as Rubio looks to pull away from Bush ahead of Saturday's primary. Polls show Rubio hanging around third place, with Donald TrumpDonald John TrumpTrump rips Dems' demands, impeachment talk: 'Witch Hunt continues!' Nevada Senate passes bill that would give Electoral College votes to winner of national popular vote The Hill's Morning Report - Pelosi remains firm despite new impeachment push MORE in the lead, followed by Sen. Ted CruzRafael (Ted) Edward CruzJim Carrey fires back at 'Joe McCarthy wanna-be' Cruz Hillicon Valley: Google delays cutting off Huawei | GOP senators split over breaking up big tech | Report finds DNC lagging behind RNC on cybersecurity GOP senators split over antitrust remedies for big tech MORE (Texas) in second.

Rubio and Bush are battling to be the establishment standard-bearer and the Florida senator has touted the backing of several key South Carolina lawmakers.

Haley, a potential GOP vice presidential pick, is a rising star in the Republican Party.

She was tapped by party leaders in Congress to deliver the Republican response to President Obama's State of the Union address in January, where she criticized Trump.