"Clark County 2020 General Election data show that 92,367 mail ballots were returned undeliverable to wrong or outdated addresses", the Public Interest Legal Foundation wrote in a research brief released Wednesday. "For a sense of scale, Former Vice President Joe Biden carried the whole of Nevada with a final lead of 33,596 votes".
Nevada was one of six states where former President Donald Trump and his allies alleged widespread voter fraud they believe cost him the presidential election.
Clark County, home to most of Las Vegas, automatically sent mail-in ballots to every "active" voter registered on file during the 2020 presidential election due to coronavirus fears at polling places.
Trump's legal team alleged a variety of significant voting issues in the state, including over 1,500 ballots from dead voters and tens of thousands of people potentially voting multiple times.
"In my years of experience in politics, I have never seen the amount of illegal voting like we have documented in Clark County, Nevada", Trump surrogate Matt Schlapp said. "It is a level of corruption I didn't think could happen in a modern, free country".
The Supreme Court of Nevada upheld a district court's order dismissing claims of election fraud.