No.

Less than 1 percent of the ballots cast in Nevada’s two largest counties in the 2024 general election were received after Election Day.

About 9,500 Clark County mail ballots and 2,400 ballots in Washoe County were received post-Election Day out of the nearly 1.3 million ballots cast in both areas. Nevada law allows any mail ballot to be received up to four days after Election Day, as long as it is postmarked by Election Day.

Nevada’s Democratic U.S. House members led their races for the entirety of the vote counting process. 

Sen. Jacky Rosen (D-NV) was losing to Republican Sam Brown on election night, but took the lead the following night once the roughly 50,000 Clark County mail ballots received on Election Day were counted. 

Rosen ultimately won Clark and Washoe counties by margins far exceeding the number of ballots received post-Election Day.

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Sources

• Nevada Secretary of State's Office Clark County mail ballot data
• Nevada Secretary of State's Office Washoe County mail ballot data
• X Clark County counting timeline
• X Rosen takes lead
• State of Nevada Mail ballot counting law
• Nevada Secretary of State's Office Final election results