Five presidential candidates plan to campaign in Iowa over the Labor Day weekend. Four are Democrats. The lone Republican candidate to schedule a trip to Iowa this weekend is John McCain, who will speak at the dedication of a veteran’s monument in Neola on Monday.

Democrats John Edwards and Joe Biden are campaigning today through Monday in Iowa and Bill Richardson’s staff says he plans to spend Labor Day here, too. Hillary Clinton plans to make stops in Sioux City and Des Moines on Labor Day, with her husband by her side.

"The next four months will be the real hard months of this campaign. We’re at a turning point now as Labor Day often is in the political season," Clinton said during a telephone interview with Radio Iowa. Clinton discounts the idea that she becomes "invisible" when her husband, the former president, is on the scene.

"Well, I don’t think so, obviously," Clinton said. "I’m excited to have him with me. He can’t campaign with me very often with me so, you know, holidays give us a chance to be together on the campaign trail." No word yet on their plans for Thanksgiving and Christmas, but the Clintons did spend this past 4th of July holiday campaigning in Iowa.

As she did in July, Clinton is trying to highlight the positives of Bill Clinton’s tenure, while stressing she is the candidate this time around. "It is about my campaign and my positions and what I believe I can do as president," she said.

Radio Iowa