Republican Sen.
Cory Gardner lost his re-election bid to Democrat challenger John Hickenlooper.
Republican Sen.
Cory Gardner lost his re-election bid to Democrat challenger John Hickenlooper.
Republican electoral victories Tuesday cast doubt over whether the US would enact any significant measures to curb planet-heating..
Challenger John Hickenlooper has derailed GOP incumbent Sen. Cory Gardner's bid for a second term in the U.S. Senate. Colorado..