The commission established by President Trump to investigate his allegations of widespread voter fraud in the 2016 election found no evidence to substantiate the claims, a member of the now-disbanded group said in a letter released Friday.

“I have reviewed the Commission documents made available to me and they do not contain evidence of widespread voter fraud,” wrote Maine’s secretary of state, Matthew Dunlap, in a letter to commission chair Vice President Mike Pence and fellow member Kris Kobach, secretary of state from Kansas.

Trump established the Presidential Advisory Commission on Election Integrity in May 2017 to look into his claims that millions of unregistered voters illegally cast ballots for his rival Hillary Clinton, leading to his losing the popular vote.

Dunlap, a Democrat, endured a rocky tenure on the Pence-helmed group, even filing a suit against the commission in November 2017 alleging that other members purposely withheld documents and information from him.

Dunlap wrote in the letter released Friday that the commission suffered from “troubling bias” in favor of the Trump administration and that he felt “dissenting or even questioning voices were unwelcome.”

He ultimately won his federal lawsuit, with a judge ordering the panel to provide him with all the documents he requested.

It was those documents that led Dunlap to his conclusion that there was no evidence to support the claims of mass voter fraud.

Trump, who once alleged without providing evidence that 3 to 5 million illegal votes were cast for Clinton, dissolved the commission in January.