DETROIT, Aug 28 (Reuters) - The United Auto Workers

(UAW) said on Wednesday it won a vote to at a Ford

joint-venture plant in Kentucky to unionize it, but believed 41

challenge ballots still pending to be illegitimate.

"We believe they are illegitimate and represent nothing more

than an employer tactic to flood the unit and undermine the

outcome," UAW said, urging Ford to acknowledge the "democratic

decision" of its workforce.

The National Labor Relations Board and Ford did not respond

to a request for comment outside regular business hours.