The School's Out singer admits he groans whenever he sees rivals Donald Trump or Hillary Clinton during TV debates, insisting their arguments are weak.

He is adamant many across the U.S. feel the same way and he wants the Republican and Democratic parties to choose stronger candidates.

Cooper tells Q magazine, "Every once in a while I'll be watching the debates on TV and Donald Trump will say something and I'll go, 'Damn!'. Because it's so outrageous! Or Hillary Clinton will come on and I'll go, 'Oh, damn!'. You can't help it! A lot of people are going, 'Let me get this straight, Trump against Hillary? Is that the best you guys can do?'."

Trump is vying for the Republican candidacy and Clinton is the favourite for the Democratic vote for the 2016 U.S. election.