Republicans could move Sen. Marco RubioMarco RubioWhat the 2016 election can tell us about 2018 midterms Fight over water bill heats up in Senate Brown-Mandel Ohio Senate race will be brutal referendum on Trumpism MORE's (R-Fla.) speech at the Republican National Convention to ensure Ann Romney's speech is carried by the television networks, multiple Republican sources said Friday.

Rubio is currently slated to give the speech immediately preceding that of Mitt Romney, who will accept the Republican presidential nomination on Thursday night.

Romney's wife, Ann, had originally been scheduled to speak on Monday night. But after the broadcast networks decided in unison only to carry three of the four nights of the GOP convention — skipping Monday — organizers began scrambling to figure out how to best showcase their candidate's popular wife.

On a conference call with reporters Friday, Romney aide Russ Schriefer said he "remained optimistic" that the networks would reverse course and air all four nights of the Republican convention. But Schriefer wouldn't rule out moving Ann Romney's speaking slot if the networks did not change their minds. The Weekly Standard reported Friday that Rubio now could end up speaking Tuesday night.

A spokesman for Rubio did not immediately respond to request for comment. A spokesman for the convention said they had no changes to announce. 

Scheduling Rubio's address immediately before Romney's had been seen as a reward for the popular Florida lawmaker, who was passed up in favor of Rep. Paul RyanPaul RyanDC's famous Christmas trees come from far and wide Transition Tracker: White House Boehner compares Trump to Teddy Roosevelt MORE (R-Wis.) for Romney's running mate.

The scheduled theme for Thursday night, according to the Romney campaign, will be "We Believe in America."

Republican National Committee Chairman Reince Priebus said in a press release Thursday that the program that night would "focus the national spotlight on the many reasons Governor Mitt Romney is uniquely suited to lead us through the challenges our nation faces during this difficult time."