Rubio: I almost quit the race against Charlie Crist

Rubio said there was a tremendous amount of pressure to quit when he was far behind in the polls and had little money in the bank. He knew Crist would attack him and wondered how he could respond with few resources. He considered running instead for attorney general.

While laying the groundwork to switch races, however, he was asked about a rumor he was dropping out and suspected that Crist’s campaign found out about the plans and was pressuring him out before he was ready to make the announcement. It angered him into staying in.

“I crossed the bridge and burned it behind me. There was no way back and no way out but forward,” Rubio wrote in the 303-page book scheduled to be released Tuesday. The Associated Press purchased a copy Thursday.