If the Republican drops out this is still Safe D, lmao. New Mexico isn't going to stray from its recent blue history in this kind of environment.
Hillary only got 48% in New Mexico and it’s hard to see many Drumpf voters voting for Heinrich over Gary Johnson. That combined with the Latino vote generally being down this year means it isn’t inconceivable that Johnson could make it close in a 1v1 scenario.
I do agree with you that Heinrich should win regardless, however, due to the general national environment. Safe D is too strong given the odd situation, however.
Safe D is most appropriate when you now have a strong and well liked incumbent that has been polling very well (two polls had him up over 20 points against Mick Rich) AND now what ever opposition that Heinrich has is now split between two people