MERCER — County commissioners have sued the maker of a decertified voting system, alleging breach of warranty.

In the lawsuit, the county seeks $925,074 in damages from UniLect of Dublin, Calif., for the company's Patriot touch-screen voting machines.

The machines were in use in the 2004 presidential election in Mercer County, where votes were apparently lost. The company has blamed the problem on an error in ballot coding and omission of a test by the county elections office.