Wisconsin Gov. Scott Walker arrives at the Republican Leadership Summit on Saturday, April 18, 2015, in Nashua, N.H.
Wisconsin Gov. Scott Walker arrives at the Republican Leadership Summit on Saturday, April 18, 2015, in Nashua, N.H. Jim Cole Associated Press
Wisconsin Gov. Scott Walker arrives at the Republican Leadership Summit on Saturday, April 18, 2015, in Nashua, N.H. Jim Cole Associated Press

Koch brothers signal 2016 support for Wisconsin Gov. Scott Walker

April 20, 2015 08:46 PM