Top South Dakota Republicans are calling for GOP presidential hopeful Donald Trump to leave the race after newly revealed audio of him making lewd and sexually charged comments was released.

U.S. Sen. John Thune, the third-ranking Senate Republican, tweeted Saturday that Trump's running mate Mike Pence should immediately take the spot at the top of the Republican ticket.

A safe bet for re-election to a third term in heavily GOP South Dakota, Thune joined other Republicans nationally in calling for Trump to drop out.

GOP Gov. Dennis Daugaard also lent his voice to the clamor Saturday, tweeting that the election is "too important" and that Trump should withdraw in favor of Pence.

Lt. Gov. Matt Michels echoed those comments, tweeting that Trump must step aside "for our party and country."