FBI Director James Comey's bombshell announcement Friday of new emails related to the investigation of Hillary Clinton has changed few voters' minds with just a week to go before Election Day.

According to a new Politico/Morning Consult poll released Monday, the Democratic nominee has maintained a slim 3-point lead over Republican Donald Trump, 42 percent to 39 percent in a four-way race for the White House. Libertarian Gary Johnson has 7 percent support, and Green Party nominee Jill Stein gets 5 percent.

The survey is the first released to be conducted entirely after the public release of Comey's letter, in which he informed Congress that investigators had come across new emails "pertinent" to the FBI's Clinton investigation in the course of a probe into former New York Rep. Anthony Weiner's alleged sexting with a 15-year-old girl.

Despite 89 percent of respondents saying they had heard the news that the FBI was looking into the new emails, support for the two candidates was identical to a poll taken on Thursday and Friday before the news broke. Clinton's 3-point margin, down from 6 points the previous week, reflected a tightening race that has been evident in many national surveys.

While 33 percent said the news of the continuing investigation made them "much less likely to vote for Clinton," that group was heavily Republican, and few were for Clinton before Friday's news. Thirty-nine percent said the news "makes no difference either way."

In fact, Trump's gains over the previous week have come almost entirely from Republicans who had been leaning toward Johnson or were undecided, rather than voters switching from Clinton to Trump over the news. Last week, just 36 percent said they were for Trump; on Monday, he had 39 percent.

A separate CBS/YouGov survey taken in 13 battleground states found similar results, with 71 percent saying the FBI revelations won't change how they plan to vote, or that they had already voted.

The muted impact of the FBI's statement, despite a media frenzy and strong reactions from both campaigns, is likely because the email issue is one that has dogged Clinton for the entirety of her campaign. The FBI's announcement Friday did not introduce much new information.

The emails belonged to longtime Clinton aide Huma Abedin, who is married to but separated from Weiner. Little is known about the contents of the emails, including whether any were sent to or from Clinton herself, but the FBI obtained a warrant over the weekend to review them and determine if they contain any classified information. The review is not expected to be completed before Nov. 8.