After GOP front-runner Donald Trump said his delegate losses in states like Colorado and Wyoming were a result of a “rigged” and “crooked” primary system, his rival Ted Cruz dismissed the notion and suggested Trump is just a sore loser.

“If you lose, don’t cry about it, go back and learn how to win an election,” Cruz said in a Tuesday interview with Fox News’s Sean Hannity.

Trump voiced concern on Twitter about how states such as Colorado “have been precluded from voting,” but Cruz countered that 1.3 million people have voted in these so-called ‘voteless elections.’

“All of this noise and complaining and whining has come from the Trump campaign because they don’t like the fact that they’ve lost five elections in a row,” Cruz said. “Republicans are uniting behind our campaigns so they are screaming on Drudge — and it’s getting echoed — this notion of ‘voteless elections’ it is nonsense.”

Cruz told Hannity that he earned delegates fairly and with a campaign that better understands how to organize on a grassroots level.

“Donald Trump’s campaign does not know how to organize on the grassroots, and so when the delegates are elected the real conservative activists show up, they elect delegates and we are winning those elections over and over and over again,” Cruz said. “I cannot help that the Donald Trump campaign does not seem capable of running a lemonade stand.”

For a related PoliZette story, click here.