After 24 hours of horrible press for Donald Trump, another top Republican has abandoned the nominee.

AP/Wong Maye-E - apimages.com

Sen. John McCain (R-Arizona) told Politico that he can no longer support Trump. While he initially felt obligated to support the party nominee, McCain now says that Trump's behavior has crossed the line.

"But Donald Trump’s behavior this week, concluding with the disclosure of his demeaning comments about women and his boasts about sexual assaults, make it impossible to continue to offer even conditional support for his candidacy," McCain said in the statement.

"[McCain's wife] Cindy, with her strong background in human rights and respect for women, fully agrees with me in this," he continued.

McCain has been criticized throughout the race for not denouncing Trump. In July 2015, at the beginning of the campaign, Trump called McCain a "loser" for being captured as a prisoner of war during the Vietnam War. Here's how The Washington Post described Trump's comments at the time:

“He’s not a war hero,” Trump said. Sarcastically, Trump quipped, “He’s a war hero because he was captured.” Then, he added, “I like people that weren’t captured.”

McCain, who was the Republican's 2008 nominee for president, spent five years in a Vietnamese prison camp after his plane was shot down and he was captured in 1967.