John Oliver Shows Why U.S. Primaries And Caucuses Are 'An Erratic Clusterf**k Every 4 Years'

How is it that a presidential candidate can win a primary or caucus, but get fewer delegates than those who lost?

Supporters of Democratic presidential hopeful Bernie Sanders remain angry over a superdelegate system they see as proof the primaries were rigged against their candidate. And on the Republican side, Donald Trump has complained about winning states such as Louisiana but receiving fewer delegates than one-time rival Ted Cruz.

"The thing is, I get why he's annoyed," John Oliver said on HBO's "Last Week Tonight" on Sunday. "And there's no clearer piece of evidence that our system is broken -- no more thoroughly dead canary in the coal mine -- than when Donald Trump is actually making sense."

Oliver explained why the U.S. has "an erratic clusterfuck every four years" and proposed a way to solve the problem... on Groundhog's Day next year.

Check it out in the clip above.