ATLANTA (AP) — An Associated Press review of every potential case of voter fraud in the six battleground states disputed by former President Donald Trump has found fewer than 475 — a number that would have made no difference in the 2020 presidential election.

Democrat Joe Biden won Arizona, Georgia, Michigan, Nevada, Pennsylvania and Wisconsin and their 79 Electoral College votes by a combined 311,257 votes out of 25.5 million ballots cast for president. The disputed ballots represent just 0.15% of his victory margin in those states.

The cases could not throw the outcome into question even if all the potentially fraudulent votes were for Biden, which they were not, and even if those ballots were actually counted, which in most cases they were not.

The review also showed no collusion intended to rig the voting. Virtually every case was based on an individual acting alone to cast additional ballots.

The findings build on a mountain of other evidence that the election wasn’t rigged, including verification of the results by Republican governors.

The AP review, a process that took months and encompassed more than 300 local election offices, is one the most comprehensive examinations of suspected voter fraud in last year’s presidential election. It relies on information collected at the local level, where officials must reconcile their ballots and account for discrepancies, and includes a handful of separate cases cited by secretaries of state and state attorneys general.

These are some of the culprits in the “massive election fraud” Trump falsely says deprived him of a second term:

A Wisconsin man who mistakenly thought he could vote while on parole.

A woman in Arizona suspected of sending in a ballot for her dead mother.

A Pennsylvania man who went twice to the polls, voting once on his own behalf and once for his son.

The cases were isolated. There was no widespread, coordinated deceit.

The cases also underscore that suspected fraud is both generally detected and exceptionally rare.

“Voter fraud is virtually non-existent,” said George Christenson, election clerk for Milwaukee County in Wisconsin, where five people statewide have been charged with fraud out of nearly 3.3 million ballots cast for president. “I would have to venture a guess that’s about the same odds as getting hit by lightning.”

Even in the state with the highest number of potential fraud cases — Arizona, with 198 — they comprised less than 2% of the margin by which Biden won.