LINCOLN, Neb. (AP) — Democratic U.S. Senate hopeful Jane Raybould is seeking additional debates in her campaign to unseat incumbent Republican Sen. Deb Fischer of Nebraska.

Raybould's campaign announced Tuesday that she has accepted invitations to three debates in Omaha and one in Lincoln. Raybould is hoping to pressure Fischer into more debates.

A Fischer campaign spokeswoman says Fischer has only agreed to appear in one debate with Raybould.

The candidates will face off at 9 a.m. on Aug. 27 at the Nebraska State Fair in Grand Island in an hour-long debate sponsored by the Omaha World-Herald and Omaha television station KMTV.

Fischer, a Republican from Valentine, is seeking a second term in office. Raybould is a Lincoln city councilwoman who helps run her family's grocery chain.