Four former Kentucky governors are endorsing Hillary Rodham Clinton in the Democratic presidential primary.

The Clinton campaign announced the endorsements from John Y. Brown, Julian Carroll, Wendell Ford and Paul Patton on Tuesday.

Clinton says she is honored to have their support leading up to the May 20 primary election in Kentucky.

The Democratic frontrunner, Illinois Sen. Barack Obama, has been endorsed by Kentucky's two Democratic congressmen, Reps. Ben Chandler and John Yarmuth.