Scott’s endorsement is expected Tuesday, the day after the Iowa caucuses, three sources confirmed to Politico
—South Carolina Sen. Tim Scott will endorse Marco Rubio on Tuesday, two Rubio campaign sources told CNN, a potentially significant boost for the Florida senator in the third-in-the-nation voting state.
One of the sources said the two senators would appear together for the announcement, but added that details were still being worked out.
No additional information was immediately available.
The support of his popular Senate colleague is key for Rubio, who is looking to consolidate the party establishment ahead of the South Carolina primary on February 20.
Since state GOP began voting in 1980, all but one of the Palmetto State primary winners -- Newt Gingrich in 2012 being the rare exception -- has gone on to win the party's presidential nomination