An outside group is rushing to support Donald Trump's Republican presidential bid, including in next-to-vote Wisconsin.

The super political action committee, called Great America PAC, will spend at least $1 million on commercials to air across the country in coming weeks, says its spokesman, Jesse Benton. One ad promotes Trump as a "unifier" and shows images from his mega-rallies.

A second ad says Trump will be far tougher than GOP rival Ted Cruz. It begins with a woman saying, "Sure I get some grief when I say I'm voting for Donald Trump. You know what? I want to protect my family."

Trump has called super PACs corrupt and insisted he does not want their help. Benton says the Trump campaign has not asked Great America to cease its work.