A new poll finds Arizona Sen. John McCain way out in front of his primary challenger in his bid for re-election. Rasmussen finds the former presidential nominee up 20 points over former Rep. J.D. Hayworth -- proof that McCain has ably handled what appeared to be a serious challenge to his candidacy.

McCain leads with 54% to 34% for Hayworth and 6% undecided. McCain enjoys a 62% favorable rating among Republicans, while 41% view Hayworth favorably.

With three straight polls showing McCain up more than 20 points, he now leads in the RCP Average by 29.4 points.

Rasmussen polling had the race down to 7 points in March and 5 points in April, but since then the polling firm (and all other pollsters) have shown the race to be a double-digit lead for McCain. The senator is also back above 50% -- a key mark for incumbents -- after dropping 3 points below in June.

The survey of 595 likely primary voters was conducted July 21 with a 4% margin of error.

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