"George is a regular kind of guy," said Joseph Holland, his campaign co-chairman.

Vilsack campaigned for Clinton nationwide as national campaign co-chairman, and focused on helping her win the Iowa caucuses.

They note that one of his two chiefs of staff will be Thomas J. D'Amore Jr., a campaign co-chairman and a former Republican state chairman.

Frank worked both times as his campaign co-chairman.

His campaign co-chairman was Paul Newman, who worked hard in the campaign.

In 2011, Lucey, although a Democrat, acted as David Prosser's campaign co-chairman.

Mr. Hart's former national campaign co-chairman, Representative Patricia Schroeder of Colorado, announced that she was considering entering the contest.

Last week, one of four campaign co-chairmen was forced to take a leave of absence after the disclosure of his association with white supremacists.

But last week he ascended to the status of potential front-runner, and the light moved over to his campaign co-chairman's connections to the militia movement and white supremacists.

The pitchers, campaign co-chairmen, will be visiting schools around the state.