Morning glories are a favorite of the deer here. I had a 10 foot high obelisk that was covered in blooming morning glories. Went out one morning and right at deer mouth height was a swath chewed out all the way around. GRRR!!! However, I have found they don't eat my sweet autumn clematis. Or ivy. Good luck. And remember, a lot of times deer will chew quite a bit of a plant before they remember that they "don't eat it".

Mine seem to leave the clematis mostly alone as long as I have much tastier hops nearby! So far, the only vines that I've not seen the vermin eat are standard vinca, virginia creeper and poison ivy ;)