If Darryl Glenn could come within 7 points of Bennet, then you're delusional if you think Gardner is doomed.
2016 was a Republican wave and Bennet isn't a particularly strong incumbent.
How is a year where the democrats gain seats in both houses of congress and win the popular vote a Republican wave?
Republicans won so many seats in 2014 that Democrats had nowhere to go but up. It was an R wave in the sense that Democrats didn't gain as many in either house than expected. The Senate is more about which seats are up, and which ones are open that anything else (see 2014, all those open seats in (Atlas) blue states made it look more R than it really was).
Poll
