The suit, filed Saturday, alleges that poll workers struggled to operate new voting machines in Maricopa County, leading to errors when the devices detected so-called overvotes – cases where too many selections were made. Rather than informing voters of the errors and giving them an opportunity to fix their ballots, workers pressed, or told voters to press, a green button to override the error, Trump’s campaign said in a statement.

“The result is that the voting machines disregarded votes cast by voters in person on Election Day in Maricopa County,” said Matt Morgan, general counsel for Trump’s campaign. Declarations collected from voters who witnessed the problem showed that it occurred on a large scale, the campaign said.

The lawsuit calls for ballots that were purportedly overvoted by in-person voters to be manually inspected, just as election officials examined such ballots that were mailed in or dropped off, the campaign said.

Arizona was called for Trump’s Democratic challenger Joe Biden by Fox News, followed by several other US media, early into the count, sparking ire from the Trump campaign, pointing to tens of thousands of votes from Republican-leaning areas that still needed to be tallied.

Pro-Trump protesters have rallied outside the Maricopa County Tabulation and Election Center in downtown Phoenix, accusing electoral officials working in brace with Democrats to “steal the vote.”

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