Nine days after upending the 2016 presidential campaign, FBI Director James Comey announced Sunday that Hillary Clinton would not face charges over newly discovered emails found on a separate computer.

In a letter to Congress, Comey said he would not revisit his initial conclusion, announced in July, that Clinton acted carelessly, but not criminally, when she used a private email account as secretary of state.

Since my letter, the FBI investigative team has been working around the clock to process and review a large volume of emails from a device obtained in connection with an unrelated criminal investigation. During that process we reviewed all of the communications that were to or from Hillary Clinton while she was Secretary of State. Based on our review, we have not changed our conclusions that we expressed in July with respect to Secretary Clinton. I am very grateful to the professionals at the FBI for doing an extraordinary amount of high-quality work in a short period of time.

Comey’s initial announcement came in the form of a vague letter to Congress on Oct. 28. It set off days of intense news coverage centered on the possibility that the Democratic presidential nominee could face indictment over emails discovered on a laptop belonging to former Rep. Anthony Weiner (D-N.Y.), the estranged husband of longtime Clinton aide Huma Abedin.

Though Clinton’s lead in the polls had been shrinking prior to then, her aides and several pollsters said that the news dampened enthusiasm among Democratic voters and further hurt her standing.

The news certainly caused damage to the FBI’s reputation ― as well as Comey’s. Several Democrats accused the director and agents in the FBI of being partisan actors trying to interfere in the electoral process, while federal prosecutors were highly critical of Comey’s decision to make such a public pronouncement so close to the election.

Comey’s Oct. 28 announcement broke with tradition at the Justice Department, which has rules in place to prevent federal law enforcement from influencing the electoral process. While an aide to Comey blamed reporters for blowing Comey’s letter out of proportion, it was not difficult to imagine how the letter would be ― and was ― used by Clinton’s political opponents in the final days of the campaign.

President Barack Obama, who nominated Comey to head the bureau in 2013, took the unusual step of criticizing the FBI director, telling a reporter that the “norm” is not to “operate on innuendo” or “incomplete information.”

In his letter on Sunday, Comey gave scant explanation for what his bureau found in the newly discovered emails, which reportedly numbered roughly 650,000. But NBC’s Pete Williams, who has been one of the top reporters on the matter, said they found nothing particularly revelatory.

NBC's Pete Williams reports that nearly all of the e-mails found on the Weiner laptop were duplicates of e-mails FBI already reviewed. — Tom Winter (@Tom_Winter) November 6, 2016

The effect of Sunday’s news on the election is hard to predict. Millions of people have already cast ballots during the days in which all that was known was that the FBI was re-investigating Clinton’s emails. Additionally, GOP presidential nominee Donald Trump and his surrogates have spent the past week arguing that an indictment against Clinton was in the offing. They even put out television advertisement highlighting the role played by Anthony Weiner in the saga.

The Clinton campaign was relatively muted in its initial response to the news.

We were always confident nothing would cause the July decision to be revisited. Now Director Comey has confirmed ithttps://t.co/BMQQx9eRzw — Brian Fallon (@brianefallon) November 6, 2016

Aide to @HillaryClinton says she rolled eyes, shrugged shoulders when told abt Comey letter. Understated exasperation over all the drama — Nancy Cordes (@nancycordes) November 6, 2016

But other Democrats had a harder time hiding their annoyance.

“Congrats to the FBI for working so hard to clear up the suspicion it needlessly created,” former Justice Department spokesman and Clinton supporter Matthew Miller wrote on Twitter. “Next time, maybe just stick to the rules though?”