Why is Glenn Beck attacking donald trump?

We have the most radical incompetent liberal in our countries history and Beck is attacking and discrediting someone who might have a slight chance of beating Obama. Romney, Gingrich, huckabee are all great guys I like them but they lost before so what makes you think they will suddenly do better this time? We have to do whatever neccessary to get Obama out even if it means electing someone less than perfect. The alternative is not acceptable. Obama cannot have 4 more years.