Rubio financial backers begin to reconsider

TAMPA, Florida (AP) — Just when Republican presidential candidate Marco Rubio needs them the most, big-dollar contributors from the party's wealthy main stream are having second thoughts about his future in the 2016 race.
Fresh misgivings about Rubio's path forward are the latest — and potentially the most debilitating — in a series of obstacles that threatens the Florida senator's future in this rollercoaster Republican campaign.