After Saturday's very important South Carolina Republican Primary, the presidential nomination process kicks into a whole new gear.Three days later, on Tuesday, Republicans in Nevada will gather for their caucus. U.S. Sen. Ted Cruz (R-Texas) isn't waiting for Saturday night's results from the Palmetto State to launch his efforts in the Silver State. He unveiled his first Nevada-specific ad on Thursday afternoon.The 30-second spot, titled "Nevada Land," continues the Cruz campaign's attacks on Republican front-runner Donald Trump over the issue of eminent domain and federal ownership of land. It features Cruz speaking directly to the voters:"Eighty five percent of Nevada is owned...