As Arizonans wait for the outcome of a highly contested U.S. Senate race between Republican Martha McSally and Democrat Kyrsten Sinema, election officials are reminding those new to the state’s voting process that the lag in a finalized tally is normal.

Maricopa County Recorder Adrian Fontes says one of the reasons for the bottleneck in his office is an outdated computer system that can only process up to 75,000 ballots a day.

But because Sinema has jumped into the lead in the latest results, some Republicans have raised allegations of fraud, the most senior of which is President Trump.

He spoke Friday morning to reporters on the White House lawn about the integrity of the ballot counting process. “Now in Arizona, all of a sudden, out of the wilderness, they find a lot of votes and the other candidate is just winning by a hair.”

Trump stumped for McSally in Mesa before the election.