Crane Cutting News Today

>> reporter: you can see the collapsed crane cutting through the building and the mangled metal still wedged in there. alisyn, we are seeing some police activity. its unclear if police are going inside the builder or not. as you might imagine with the crane still in there the stability of the structure cant be good. >> so scary. thank you very much for the reporting from the ground there. a new cnn des moines register poll shows a handful of candidates pulling away from the pack. joe biden rem...