Want to Guess How Donald Trump's Iowa Poll Numbers Were Affected After He Insulted John McCain?

Before he made disparaging remarks about the military record of Sen. John McCain (R-Arizona), Republican presidential candidate Donald Trump was getting 16 percent support in Iowa, according to new NBC News-Marist polls.

Image source: Donald Trump's Facebook page

And after the billionaire businessman's remarks?

Trump's support in Iowa rose to 18 percent.

Other Iowa numbers: Scott Walker leads the field at 19 percent, Trump's overall tally is 17 percent, Jeb Bush is at 12 percent, Ben Carson is at 8 percent, Mike Huckabee is at 7 percent and Rand Paul at 5 percent.

The polls were conducted July 14-21 — before and after Trump's comments about McCain.

While Trump's comments about the Arizona senator may have hurt him in New Hampshire — Trump was at 26 percent support before his statements and 14 percent after — he still leads other GOP hopefuls in the early primary state at an overall 21 percent, the polls found.

Other New Hampshire numbers: Jeb Bush (14 percent), Scott Walker (12 percent), John Kasich (7 percent), Chris Christie and Ben Carson (6 percent), Marco Rubio and Ted Cruz (5 percent), the polls found.

Another key metric: Trump's favorable/unfavorable rating among Iowa Republicans is 45 percent/44 percent and at 39 percent/53 percent among New Hampshire Republicans, the polls found.

As for the Democrats, Hillary Clinton leads Bernie Sanders by 29 points in Iowa — 55 percent to 26 percent, the polls found. But Sanders was only at 7 percent in a February NBC-Marist poll.

Clinton also leads Sanders in New Hampshire — but only by 13 points (47 percent to 34 percent). Again, Sanders gained significant ground since February, when he was only at 13 percent.

This story has been updated.

(H/T: Drudge Report)

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