With former Rep. Mike Pompeo at the CIA, a special election will soon be held to fill his seat in Kansas’ 4th Congressional District. Tonight, Republicans nominated Ron Estes, the state Treasurer, at their convention for the position. The Democrats hold their convention on Saturday, as do the Libertarians. The special election will be held on April 11th. Mr. Estes won his last two statewide elections handily, dispatching Democrat Dennis McKinney, the incumbent, by seventeen points in 2010, and winning re-election by a thirty-five point margin in 2014. The district voted for Mike Pompeo by a thirty-one point margin last year, so he is the heavy favorite for the special election, regardless the Democratic nominee.