Republican Senator Pat Toomey of Pennsylvania is expected to announce his support for Marco Rubio. With endorsements from South Carolina Senator Tim Scott on Monday and from two House members on Tuesday, Rubio will finally – finally! – overtake Jeb Bush for the lead in FiveThirtyEight’s count of endorsement “points.”
Members of Congress aren't the only ones moving to his corner this week. The Florida senator also picked up supporters in Arkansas and Pennsylvania and Virginia.