Sen. Marco RubioMarco Antonio RubioCongress faces growing health care crisis in Puerto Rico The Hill's 12:30 Report Colbert mocks Trump for sipping water during speech on Asia trip 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 CantorIf we want to make immigration great again, let's make it bipartisan Top Lobbyists 2017: Hired Guns GOP Rep. Jeb Hensarling to retire after end of current term 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