President Donald Trump’s campaign has filed a lawsuit in Nevada that seeks to count every “legal” vote in the state, alleging that some ballots were cast by people who live elsewhere. The campaign, which announced the lawsuit in Las Vegas, alleges there are at least 10,000 people who voted in the state but no longer live there. Nevada election officials, who released little new information on Wednesday, are expected to report their latest batch of results on Thursday. “We’re asking the judges to go through all the irregularities to stop the counting” of the disputed ballots, Adam Laxalt, a former Nevada Attorney General, said Thursday when announcing the lawsuit. The lawsuit marks the fourth state in which the president’s campaign will open a post-election legal action, laying the groundwork to contest results as Trump continues to slip behind former Vice President Joe Biden in the race for 270 Electoral College votes to clinch the presidency. The other lawsuits have been filed in Pennsylvania, Georgia, and Michigan—which was called for Biden on Wednesday.