Wenatchee, Wash. (AP) -- An expert witness for Republicans challenging the 2004 election of Gov. Christine Gregoire testified Thursday that when illegal votes are subtracted, the GOP candidate was the rightful winner. The state Republican Party and candidate Dino Rossi challenged the election after Gregoire's 129-vote victory, the closest margin of any governor's contest in the nation's history. The challengers are alleging fraud and worker errors, and want the court to nullify the election,