'They need someone with balls': Donald Trump will 'clean out all the scumbags'

The Republican presidential candidates are "all pretenders" because Donald Trump is just "going to walk it in" at the next US federal election, says Sky News contributor Prue MacSween.

"He was asked if he was going to be a dictator - I hope he is," she told Sky News host Peta Credlin.

"I hope he comes in, cleans up the joint, cleans out all the scumbags who are in there and gets the joint running again.

"There's no respect for America, that's why China's so empowered.

"They need someone with balls who's going to get in there and fix the joint because, at the moment, the whole world is looking at them and thinking 'what a bunch of poor things'."