Los Angeles (CNN) Los Angeles County, the biggest voting district in the US, will give voters a new experience during this year's California presidential primary, and critics warn things may not go as smoothly as predicted.

"Los Angeles is the perfect storm," UC Berkeley Professor Philip Stark said about the process and method in which voters will cast their ballots.

"They had a lot of money and the ability to spend a lot. They did not see what they wanted in the market, so they enlisted the help of computer scientists and usability experts with lofty goals of a one-size-fits-all solution to an unsolvable problem," Stark added.

There is a lot at stake for Los Angeles County. With more than 5.4 million registered voters, the end result could be an election model ready to be replicated by counties and cities across the nation or a colossal disaster -- putting in jeopardy millions of votes.

The Voting Solutions for All People system, most commonly known as VSAP, is the country's first publicly owned and designed system. Los Angeles County officials say they continue to make improvements to the system -- a decade in the making and with a price tag of $300 million -- even though it is weeks from when voting in the presidential primary is set to begin.

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