John McCain's Republican primary challenger said Thursday he regrets taping an infomercial on behalf of a company accused of taking advantage of consumers.

Republican U.S. Senate candidate J.D. Hayworth's campaign is defending his role as a pitchman three years ago for a Florida company that consumer advocates have accused of airing misleading ads.

The Federal Election Commission has dismissed a complaint alleging that J.D. Hayworth improperly used his former Phoenix-area radio show in his bid to unseat Arizona Sen. John McCain.

Sen. John McCain will be campaigning in Yuma in southwestern Arizona on Friday. The senator will open his Yuma County Campaign Office and then head to Armed Forces Park to receive an award from the county Chamber of Commerce.

John McCain's re-election campaign has released its second set of television and radio ads attacking the Arizona senator's primary opponent for his ties to Washington.

A man who recently served as an adviser to John McCain's rival and once helped launch the Minuteman border watch movement has been accused by his estranged wife of threatening to kill their family and any police who try to protect them.

A serious re-election fight wasn't what Republican John McCain expected when he returned to the Senate after losing the presidency.

John McCain is calling in former Massachusetts Gov. Mitt Romney on Friday.

Arizona Sen. John McCain plans to launch new radio and television ads Thursday that blast his primary opponent for supporting special funding requests known as earmarks, his campaign said.

GOP Senate hopeful J.D. Hayworth, locked in a tough primary fight against Sen. John McCain, flubbed a key historical fact last week, asserting wrongly that the United States never declared war on Germany in World War II.