In the crowded field of Republican candidates for president, Donald Trump and Jeb Bush are now tied for first.

Republican presidential hopeful Donald Trump (AP Photo/LM Otero)

The CNN poll shows Trump took a bit of a hit over his criticism of John McCain, but he continues to be the front-runner in many states.

The good news for Gov. Chris Christie is that he has moved up slightly in the latest tally, enough to qualify for the first debate.

The bad news is that he's still polling at about just four percent.

Trump, Bush, and Scott Walker are the only candidates that have double-digit support.