Sen. Marco RubioMarco RubioA guide to the committees: Senate Schumer: GOP will break from Trump within months GOP loses top Senate contenders MORE's 12-year old daughter remains in fair condition at a Miami intensive care unit on Sunday, the Florida Republican's office said in a statement.

Alex Conant, a spokesman for the senator, said that Amanda Rubio's long-term prognosis was "favorable." 

Amanda Rubio, the eldest of Marco Rubio's four children, was injured in a golf cart accident on Saturday.

"The family is grateful for all the messages of support and the prayers said for their daughter," Conant said Sunday.

The senator’s daughter had been visiting with classmates in a private community, and had been a passenger in a golf cart that was involved in the crash.

Marco Rubio spent much of the day campaigning with the GOP nominee for president, Mitt Romney, appearing at stops in Pensacola and Kissimmee. Rubio was informed of his daughter’s accident as he was leaving the stage in Kissimmee, and was en route to Miami on Saturday evening.

According to media reports, Romney’s motorcade pulled over in Central Florida around 7 p.m. to let Rubio off. The senator left in a police car.

Top officials from both parties – including House Majority Leader Eric CantorEric CantorGOP shifting on immigration Breitbart’s influence grows inside White House Ryan reelected Speaker in near-unanimous GOP vote MORE (R-Va.) and Rep. Debbie Wasserman Schultz (Fla.), the chairwoman of the Democratic National Committee – tweeted their condolences to Rubio.

“Senator and Mrs. Rubio are grateful for all the outpouring of support and prayers,” Conant had said Saturday in a statement.

This story was first posted on Oct. 27 at 7:48 p.m. and has been updated