The effort to recall Portland's openly gay mayor, Sam Adams, has officially begun, the Willamette Week reported.

On Tuesday, the Community to Recall Sam Adams filed a prospective petition with the city to recall the mayor. Later in the day, City Auditor LaVonne Griffin-Valade approved the group's request.

The group announced the effort in January, soon after the mayor was sworn in, but city law requires a six month waiting period after an official takes office before a recall effort can begin collecting signatures.

Adams' admission that he covered up a sexual affair with a teenage boy during his mayoral campaign prompted the recall effort.

The mayor called a press conference soon after coming clean to a Willamette Week reporter who confronted him with new evidence about the affair. He then admitted that his long-standing denial of having a sexual relationship with 18-year-old Beau Breedlove was not true.

During the press conference, Adams admitted to sleeping with Breedlove as soon as three weeks after he turned 18 and the two dated for “maybe two months.”

Adams apologized to the people of Portland, and then agonized for days whether he should step down over his actions. In the end, the forty-five-year-old career politician decided to remain in office.

Several prominent Portland newspapers – the Oregonian, the Portland Tribune and the Portland Business Journal – asked Adams to resign, saying he had “lost credibility.”

But at a rally held before Adams announced he would remain in office, 1,000 people, including openly gay columnist Dan Savage, urged the mayor to stay put.

Last month, Attorney General John Kroger concluded that Adams had not broken any laws. Oregon law puts the age of consent at 18 and even a “sexual” kiss with anyone younger is considered a crime. And Breedlove, a former legislative intern, was 17 when the pair met. Critics say Kroger's report papered over important facts and omitted critical interviews.

Organizers have 90 days to collect 32,183 valid signatures to qualify the recall for the ballot.