"Hopefully Dems aren't able to gerrymander the districts as much as they were able to get away with last time."

I seem to recall that they made Coffman's district more competitive - they did not gerrymander.  What district did they gerrymander exactly?

Gerrymandering seems to have been more of a Republican tactic as of late:
http://www.denverpost.com/2017/06/25/gerrymandering-2016-election/