Sen. Marco RubioMarco RubioTop Trump officials push border wall as government shutdown looms Rubio defends Trump: 'This whole flip-flop thing is a political thing' Rubio: Shutdown would have 'catastrophic impact' on global affairs 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 CantorBrat: New ObamaCare repeal bill has 'significant' changes Overnight Energy: Flint lawmaker pushes EPA for new lead rule House staffer, Monsanto vet named to top Interior posts 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