Fair point regarding 3rd Party support in the West...
I'm a bit more concerned about CO than some, although granted much of Trump's improvement in the state has come from bringing the Republican holdouts around, and Clinton still has some room to grow with Millennials there that have been an elusive target, and play a major role in that state's electorate.
We'll have to see how CO fairs a couple weeks from now.
Something worth considering is the election law changes Democrats passed in 2013, which instituted a mail-in voting system where all active registered voters receive a ballot in the mail, and there is in-person voting/same day voter registration, but in-person voting centers are more limited than they were in 2012 due to the mail component.
Democrats obviously did it at least in part for partisan gain, and same-day registration will help with minorities/Millennials, but I think the unforeseen consequences of mail voting is that it brought more old people into the mix, who are still heavily Republican in CO.
Less in-person polling places + more older voters due to mail, with Millennials more likely to change addresses and thus not get mail ballots means Democrats might have given Republicans an advantage by accident.
Curious to see how this plays out!
Vote-by-Mail (VbM) has been in places in Oregon for decades now and generally has increased overall turnout, and now there is a new automatic voter registration for new drivers in places as well.
But yes, changing the system might be confusing for some. Not sure about CO, but out here you just drop it in one of many ballot boxes scattered around each county, so one doesn't even need a stamp, and it takes much less time than going to a polling places for the lazier voters, or people without spare time, or odd work schedules, etc...