LIVE: Republican presidential candidate Donald Trump at Treasure Island in Las Vegas

The Trump campaign visits Las Vegas.

A supporter cheers during a campaign rally for Republican presidential candidate Donald Trump at the Treasure Island hotel-casino on Saturday, June 18, 2016, in Las Vegas. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco

Supporters wait during a campaign rally for Republican presidential candidate Donald Trump at the Treasure Island hotel-casino on Saturday, June 18, 2016, in Las Vegas. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco

Nevada Republican Party Chairman Michael McDonald uses his phone during a campaign rally for Republican presidential candidate Donald Trump at the Treasure Island hotel-casino on Saturday, June 18, 2016, in Las Vegas. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco

Gwen Barrett, president for Active Republican Women of Las Vegas, attends a campaign rally for Republican presidential candidate Donald Trump at the Treasure Island hotel-casino on Saturday, June 18, 2016, in Las Vegas. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco

Republican Congressional District 3 candidate Danny Tarkanian speaks during a campaign rally for Republican presidential candidate Donald Trump at the Treasure Island hotel-casino on Saturday, June 18, 2016, in Las Vegas. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco

Nevada Republican Party Chairman Michael McDonald speaks during a campaign rally for Republican presidential candidate Donald Trump at the Treasure Island hotel-casino on Saturday, June 18, 2016, in Las Vegas. Erik Verduzco/Las Vegas Review-Journal Follow @Erik_Verduzco

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