(Updated to include more bio details about Democratic candidate)
Republican U.S. Rep. Roger Marshall hasn't even decided whether to run for the U.S. Senate and the line of potential candidates who might replace him is already forming.
More than a half-dozen candidates — Democrats and Republicans — have been mentioned for a race in the 1st Congressional District that could be every bit as wide open as the one for the U.S. Senate now that Pat Roberts is retiring.
Former Lt. Gov. Tracey Mann, state Rep. Troy Waymaster, state Rep. Steven Johnson, former state lawmaker and National . . .