Nevada Gov. Steve Sisolak at a February event in Las Vegas. Photo: Alex Wong/Getty Images
Why it matters: President Trump told reporters Monday he'd sue Nevada in a bid to stop the mail-in measure. After Sisolak's announcement, Trump retweeted his earlier tweet stating: "In an illegal late night coup, Nevada's clubhouse Governor made it impossible for Republicans to win the state. Post Office could never handle the Traffic of Mail-In Votes without preparation. Using Covid to steal the state. See you in Court!"