Ted Cruz
Ted CruzReuters

Republican candidate Ted Cruz and Democratic presidential runner Bernie Sanders registered important wins in the Wisconsin presidential primary Tuesday, slowing down the leading contenders in the respective parties — Donald Trump and Hillary Clinton.  

Cruz's win put a roadblock in Trump's race to win 1,237 delegates needed to become the Republican nominee in the Nov. 8 presidential election. Trump's campaign called the Texas Senator a "Trojan horse" following the Wisconsin results. 

"Ted Cruz is worse than a puppet--- he is a Trojan horse, being used by the party bosses attempting to steal the nomination from Mr. Trump," the Trump campaign said in a statement,  according to the Associated Press.

Cruz called Tuesday's results "a turning point" during his victory rally. "Tonight is a turning point. It is a rallying cry to the people of America. We are winning because we are uniting the Republican Party," he said. 

Clinton took to Twitter to wish Sanders for his win. "Congrats to Bernie Sanders on winning Wisconsin. To all the voters and volunteers who poured your hearts into this campaign: Forward!" she said. 

"Real change never takes place from the top down; it always takes place from the bottom up," Sanders said at his rally.