PORTSMOUTH, N. H.—In a Republican primary filled with intense rivalries, none is more personal than the one between Jeb Bush and his one-time lieutenant Marco Rubio.
Mr. Rubio got the better of his former governor in the last GOP presidential debate, undermining Mr. Bush’s standing in the primary and thrusting the Florida senator to the head of the pack of candidates with elected experience.
That raises the stakes heading into a critical week in which they will appear at the next GOP debate in Milwaukee Tuesday and a forum in Florida on Friday before a hometown audience both will eventually need to keep their presidential hopes alive.
“You have two people from the same state, the same county, literally neighbors who have spent so much time together and been on the same page politically, and when one of them starts attacking the other, it becomes personal,” said former state Rep. Gaston Cantens, who served with both men in Tallahassee and is backing Mr. Rubio. “It is the ugly side of politics.”
