Democratic presidential hopeful Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE is denouncing the long lines Arizona voters faced during Tuesday's primary, calling the situation "a disgrace."

"People in the United States of America should not have to wait five hours in order to vote. We do not know how many thousands of people who wanted to vote yesterday in Arizona did not vote," Sanders said during a press conference in San Diego, according to ABC News.

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"What happened yesterday in Arizona is a disgrace," the Vermont senator added.

According to the Arizona Republic, many voters in Maricopa County, which includes Phoenix, waited in line for five hours due to a reduced number of polling locations. The county had just one polling site for every 21,000 voters.

But Sanders locked up two wins Tuesday night, beating Clinton in the Utah and Idaho caucuses.