Question: The 2012 United States Senate election in Nevada ended in a narrow win for which incumbent Republican?
Sentence (from "United States Senate election in Nevada, 2012"): Incumbent Republican U.S. Senator Dean Heller, who was recently appointed to this seat left vacant by resigning U.S. Senator John Ensign, was narrowly elected to his first full term over Congresswoman Shelley Berkley.
Relevant evidence: Yes