The Arizona Democratic Party is calling on state leaders to look into the long poll lines and "irregularities and failures" of Tuesday's presidential preference election.
Leaders described Tuesday's presidential primary as a "disaster" and "a perfect storm".
"Let's be clear, voter suppression happened," said Rep. Ruben Gallego. He said it's not known if it was by chance or planning, but insists it happened.
Leaders called for an investigation into what happened so it does not happen again.
Voters spent hours--some over 5--standing in line at the polls to cast their ballots, many of them frustrated.
Secretary of State Michele Reagan said Wednesday she had launched a statewide full-scale investigation.
Maricopa County Recorder Helen Purcell said she accepts "full responsibility" for the election issues.
Phoenix Mayor Greg Stanton has requested an investigation by the U.S. Department of Justice.
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