MADISON, Wis. -

Rising political stars and personal friends, Republican vice presidential candidate Paul Ryan and Wisconsin Gov. Scott Walker worked quietly behind the scenes to coordinate public policy, avoid each other's limelight and steer clear of political minefields that would haunt their campaigns.

That's what is revealed in a review of more than 1,000 pages of internal emails obtained Friday by The Associated Press.

The emails reviewed by the AP offer an unusual, behind-the-scenes glimpse of the interpersonal relationship between Ryan and Walker.

Ryan's emails are exempt from disclosure under the U.S. Freedom of Information Act.

But messages sent by Ryan or his aides to Walker or the governor's staff are subject to Wisconsin's open records law.