Former Gov. Jeff Colyer picked up a key endorsement Monday in his bid to reclaim the governorship, earning the backing of U.S. Sen. Roger Marshall, as he launched a full-throated appeal as the "only conservative" in the nascent race. It comes as Colyer formally announced his gubernatorial bid at the Capitol Plaza Hotel — a race he already effectively entered when he announced the beginnings of a campaign apparatus in February. Marshall's endorsement could be a key asset in winning over conservative voters, especially proponents of former President Donald Trump. And it helps Colyer burnish ...