Officials in the election battleground state of Pennsylvania on Thursday asked a federal judge to dismiss a lawsuit brought by U.S. President Donald Trump's campaign seeking to prevent the state from certifying its results in the vote for president. In court filings in the U.S. District Court for the Middle District of Pennsylvania, lawyers for the Pennsylvania secretary of state and seven of the state's counties said the case made vague and unsupported allegations "on the basis of repeatedly-rejected legal theories and no evidence." "This Court should see this lawsuit for what it is: a transparent and premeditated attack on our electoral system that broadly seeks to disenfranchise all Pennsylvania voters who legally cast ballots in this election," four of the counties said in a court filing.