Definitely, and we should be switching as soon as possible, regardless of how soon the oil runs out. Considering that even the US department of defense issued a report in 2002 stating that global warming was the most serious threat to America, well above nuclear war or terrorism, it seems pretty essential to switch to a power source, that if used correctly is very clean and has no CO2 emissions.
Don't make a blanket statement about liberals though, I am extremely liberal, and an environmentalist, but i realize the necessity and potential of nuclear energy. It seems as if many others are seeing the light as well, I heard an interview today with one of the founders of Greenpeace, who has split with the group over the issue, and founded a new group whose sole purpouse is pushing for nuclear energy.