David Alexander Clarke Jr. (born August 21, 1956) is the 64th Sheriff of Milwaukee County, Wisconsin. In 2002, Clarke was appointed to a vacancy by Governor Scott McCallum, and later elected that same year to his first four-year term. He was re-elected in November 2006, 2010, and 2014, and is currently serving his fourth full term. Although registered and elected as a Democrat in a heavily Democratic county, Clarke's political views align with deeply conservative Republicans. Clarke frequently appears as a guest on Fox News and was a speaker at the 2016 Republican National Convention.