Note: From time to time, producers and reporters who work on CNN's "Running Mate" feature that they provide for us will provide blog comments from their field assignments. We hope to include their thoughts on a regular basis here on our political page.
By Chris Welch in Iowa, Sareena Dalla in New Hampshire, and Peter Hamby in South Carolina:
It was a busy weekend on the campaign trail for many of the '08 candidates. Here is what you may have missed over the weekend.
Most of the Democratic candidates were invited Sunday to the 30th annual Harkin Steak Fry, a fundraiser for Iowa's Democratic Senator Tom Harkin.
However, two of the Democratic candidates were noticeably missing. But it wasn't their choice-they weren't invited.
Congressman Dennis Kucinich, D-Ohio, and former Alaska Senator Mike Gravel weren't on stage with the rest of the Democratic pack for Harkin's fundraiser.
On the GOP side, Rudy Giuliani spent Sunday at the New Hampshire International Speedway for the NASCAR Nextel Cup-Sylvania 300. This was the second time the presidential hopeful attended a NASCAR event.
Amidst cheers for celebrity drivers Dale Earnhardt, Jr. and Jeff Gordon, were cries of "Rudy, Rudy!" as he walked through the stadium signing autographs, taking photographs and shaking hands.
One supporter walked up to him and said, "See you in 2009." A few seconds later, Giuliani said to another fan, "Tell him '08 just in case. When he shows up in '09 it won't do us any good."
Meanwhile, in Hilton Head, South Carolina, Sen. John McCain again had words about the MoveOn.org ad in last week's New York Times and criticized democrats for not standing up to the organization.
"Now, they acknowledge that [Petraeus] is an honorable and fine military man, but they refuse to repudiate MoveOn.org," McCain said of the Democrats. "And as you say, if you can't stand up to them, how can you stand up to the tough challenges that are presented to you as President of the United States? I don't know the answer to that."
McCain's comments drew applause from the crowd of about 200 people, including dozens of veterans and their families, gathered at the Kingfisher Restaurant in this coastal resort town.
McCain has been campaigning on his "No Surrender Tour" in South Carolina accompanied by a blown-up version of the MoveOn.org ad, telling crowds that the ad is "reprehensible."