Former New Jersey governor Chris Christie has ended his campaign for president, in a move that was expected to boost to Nikki Haley and the remaining Republicans challenging Donald Trump for the party’s nomination for the White House.

“It’s clear to me that there isn’t a path for me to win the nomination,” Christie said at a town hall event on Wednesday afternoon in Windham, New Hampshire. His withdrawal came just days ahead of the Iowa caucuses, the official start of the presidential primary season, on January 15.

Bobbie Kilberg, a Christie donor, told the Financial Times that the former governor did not intend to support another Republican candidate. He had not held any discussions with Haley about leaving the race as of the mid-afternoon, Kilberg added.