Supporters of Democratic presidential candidate Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE are up in arms about the number of polling locations in place for the Puerto Rico primary.

A Sanders supporter, for example, pointed out in a tweet on Sunday that Puerto Rico had 1,510 polling locations in place for the Democratic primary three weeks ago. Now it has just 455.

3 weeks ago, Puerto Rico had 1510 polling places for the Dem Primary. Today they have 455. #TheFixIsInPR pic.twitter.com/bjRdDp5t2R — jennifer dillon (@funkinatrix) May 29, 2016

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A "Sanders for President" reddit page also called the reduction "about as bad as Arizona." Dozens of Sanders supporters voiced their displeasure on the page over the cuts.

The commonwealth initially had 1,510 polling locations. But on Friday, it announced instead that there would be 455 for the June 5 primary.

Roberto Prats, president of the Democratic Party on the island, said the 455 locations are four times more than the number of polling locations open in the Republican primary in March, according to Elnuevodia.com.

In the Republican primary in March, the commonwealth operated on just 110 polling locations, compared to about 1,500 in 2012, according to Bloomberg News.