The NDP got in really only because of the Conservatives being a lot like the GOPe in the United States. Even when the late Ralph Klein cleaned up the fiscal mess in that province, a lot of establishment Red Tory types did not like that he did that and how he did (standing up to the teachers’ unions, etc).
There are no uncommitted voters... They are merely not stating who they support. The Tories will win big time in Alberta and the people can’t wait to vote them out of office.