I don't know, but I think there are more than one Mountain in Colorado ;-)
Colorado Springs - barely conservative
Falcon/Peyton - very conservative
Manitou Springs - very liberal
Pueblo - liberal
Denver - liberal
El Paso county is usually the area that carries the state for conservatives.
The mountain counties west of the Springs seem just fine from a conservative point of view. I live in Cripple Creek. A lot of ex-military up here and they seem to be naturally conservative, especiallly the younger generations.
To be sure, there are still a few greying pony tails with torn tie-dye but they seem fairly innocuous. I make an effort not to engage them in any political discourse as 1) I'll never change their minds anyway, and 2) they include the best plumber in these parts who also owns the best pizza/bar joint around. (I always ask him if he's washed his hands when he's making pizzas on Friday nights. He always answer no that that is the secret of the unique taste of the pizzas he makes.)
The only rabid lefties I've encountered so far seem to be transplants from Kalifornika and Texas.
Change of seasons? You bet! But keep in mind that most of these towns are at 9000' or higher and the winter temp's can be tough. We had over two weeks last winter below -10 every night. However, there is always an however, the humidity is low (low! hell, try around 5% most of the time during the winter) that you don't feel it as much as say Buffalo, NY. This dryness presents other challenges in the winter but it's overall a great climate if you like invigorating climates.
It varies. Rural areas are always conservative. Tourist traps like Aspen and Snowmass are always liberal. Denver is liberal but many of the surrounding suburbs are more conservative.
Boulder just occupies space and sells beer and bongs to the university party crowd.