The writing is on the wall here and Rubio’s advisers know it:

CNN – A battle is being waged within Florida Sen. Marco Rubio’s campaign about whether he should even remain in the Republican presidential race ahead of his home state primary on March 15, sources say.

Rubio himself is “bullish” on his odds of winning the critical primary, despite some advisers who are less hopeful and believe a loss there would damage him politically in both the short- and long-term.

Publicly, the campaign is maintaining they are still a contender in this race, touting a Sunday win in Puerto Rico’s primary that delivered Rubio 23 delegates. But privately, the campaign is having a debate about whether or not he should remain in the mix — even for his home state of Florida’s primary.

“He doesn’t want to get killed in his home state,” one source familiar with the discussions said, noting “a poor showing would be a risk and hurt his political future.”

Most of his advisers agree he does not have a path to the nomination and some are advising him to get out ahead of the March 15 primary.

Sources within the campaign also say the pressure will only continue to mount following an expected disappointing showing Tuesday, when voters in Michigan, Mississippi, Hawaii and Idaho make their picks in the GOP primary.

“Not going to have a great day is an understatement,” one campaign source said.

…

One potential x-factor in the Florida contest is the looming possibility of an endorsement from once-rival Jeb Bush. But Rubio and Bush, the former Florida governor, have spoken three times since Bush dropped out of the 2016 last month and the Rubio campaign is not expecting an endorsement.

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