Hi SB:
It wasn't clear if you are looking for a guided hunt, if so, can't help you with that. There are too many elk in CO, and I don't think you would have much trouble finding one on your own.
This year there are still thousands of leftover cow tags in great units. The OTC tags are available as well.
http://wildlife.state.co.us/Leftoverlicenses/List.pdf
It's getting late to start planning a hunt for this year, but if you are deadset on hunting, Colorado has plenty of tags.
Good Luck
CE