Former Colorado Governor John Hickenlooper will try to secure the state’s Democratic U.S. Senate nomination on Tuesday after a series of stumbles in a race vital to the party’s hopes of recapturing Senate control in November. Hickenlooper, recruited to run last year by national Democrats after his failed presidential campaign, has been staggered in recent weeks by ethical violations and campaign gaffes. The winner will face conservative Republican U.S. Senator Cory Gardner, one of the country’s most vulnerable incumbents in a state that has drifted left in recent years, in the Nov. 3 election.
