WATCH: Bill Maher rubs California's success in the face of Republicans Maher said Republicans need to start "looking at the results from the lab" when it comes to taxing the rich

"Real Time" host Bill Maher, during his "New Rules" segment Friday, peacocked California's thriving economy after the state raised taxes on its wealthiest citizens.

"If Republicans are going to keep calling states 'laboratories of democracy,' they have to start looking at the results from the lab," Maher said, noting that after California raised taxes on the wealthy, the state now sits sixth on the list of world's largest economies. "Whereas states like Kansas and Louisiana that went back to the old trickle-down theory of 'cut taxes on the rich and they'll always do the right thing,' are financial catastrophes."

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Maher explained that, after former-Governor Arnold Schwarzenegger left office, California elected Democrats up and down the ballot, "so we can really study what happens when liberal policies are tried unimpeded. And the only thing I have to say to Republicans about that is: scoreboard, bitches."

Watch the full segment below: