Sen. Tim Scott to endorse Rubio
© Getty Images

South Carolina Sen. Tim ScottTimothy (Tim) Eugene ScottPartisan tensions rise as Mueller bill delayed GOP dismisses report that tax law will add .9 trillion to debt Gowdy on video questions how long Pruitt is ‘going to make it’ MORE (R) is expected to endorse Sen. Marco RubioMarco Antonio RubioStudents gather outside White House after walkout to protest gun violence Overnight Energy: Senate confirms Bridenstine as NASA chief | Watchdog probes Pruitt’s use of security detail | Emails shine light on EPA science policy changes Senate confirms Trump’s pick to lead NASA MORE (R-Fla.) for president on Tuesday, according to a report from Politico.

Scott would be Rubio's second congressional endorsement from South Carolina. Rubio also has the support of Rep. Trey GowdyHarold (Trey) Watson GowdyTop Pruitt aid requested backdate to resignation letter: report Trump claims vindication after release of Comey memos Memos document Comey's interactions with Trump MORE (R-S.C.), the chairman of the House committee investigating the 2012 Benghazi attacks.

ADVERTISEMENT
Scott is the only black Republican in the U.S. Senate, and his endorsement could give Rubio a boost in the first Southern primary state.

Rubio has the support of 28 lawmakers, according to The Hill's tally of congressional endorsements. That's good for second place, behind former Gov. Jeb Bush (Fla.), with 31.

Lindsey GrahamLindsey Olin GrahamRepublicans divided over legislation protecting Mueller Rand Paul under pressure as Pompeo hunts for votes Dems walk tightrope on Pompeo nomination MORE, South Carolina's other senator who ended his own presidential bid in December, is backing Bush.

Updated at 9:47 p.m.