In a sign that the legal team for the Trump campaign is aggressively laying the ground work for potential legal challenges -- big and small -- lawyers have gone to state court in Nevada in an early vote dispute.In legal briefs filed on Monday night, Trump lawyers are asking for relief in case "the election of presidential electors from the State of Nevada is contested", CNN reported.They are suing Joe P. Gloria, the Clark County Registrar of Voters, over a decision, they allege, he made to keep polling locations open "two hours beyond the designated closing time". The lawsuit targets polling places in greater Las Vegas that have larger minority voting precincts.Dan Kulin, a spokesperson for the county, told CNN that no early voting stations extended their closing times. They did, however, process voters who were in line at closing time to allow as many people to vote as possible.Trump lawyers are asking for an order to have the pertinent early vote ballots not to "commingled or interspersed" with other ballots."From the polling, it appears that Nevada is so close, that the Trump campaign thinks it is worth challenging any violation in voting protocol," said Robert Lang of University of Nevada Las Vegas. "The numbers that came in could represent several thousand people across the four precincts, which could determine who wins the electoral college vote or change the senate race."