DES MOINES — Democrat Hillary Clinton, facing renewed scrutiny over her use of a private e-mail server while serving as secretary of state, called on FBI officials Friday to release any and all information they have regarding a new batch of e-mails the agency has said it is reviewing.

“We are 11 days out from perhaps the most important national election of our lifetime,” Clinton told reporters, after a campaign rally in Des Moines. “Voting is already underway in our country, so the American people deserve to get the full facts immediately. The director himself has said he doesn’t know whether the e-mails . . . are significant or not . . . I’m confident whatever they are will not change the conclusion reached in July.”

The former secretary of state landed in Cedar Rapids on Friday afternoon for the first of two campaign rallies, confronting news that FBI officials were reviewing newly discovered e-mails on devices seized from one of her top aides in a separate investigation, to determine if they contained classified information from Clinton’s time in the State Department.

Clinton, who has been fighting to preserve her national polling lead against Republican Donald Trump, did not respond to questions shouted by reporters as she disembarked her campaign plane in both Cedar Rapids and Des Moines, but her campaign manager John Podesta issued a statement questioning the timing of the inquiry, which comes just days before Election Day and after the FBI in July announced that a probe into Clinton’s use of the server while secretary of state found no evidence of criminal wrongdoing.

“We are confident that this will not produce any conclusions different from the one that the FBI reached in July,” Podesta wrote.

On the campaign trail, Clinton stuck to her typical stump speech themes, using her appearances to characterize Trump as a candidate with a “long track record” of demeaning and insulting women, while billing herself as a champion of women’s issues.

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“This is a man who relishes making women feel terrible about themselves,” Clinton told hundreds of supporters at an outdoor rally in Cedar Rapids. “He goes after the dignity and self-worth of women, and I don’t think there’s a woman anywhere who doesn’t know what that feels like.”

In Des Moines, Clinton told supporters crowded into a gymnasium at Theodore Roosevelt High School that her campaign could not afford to take its “foot off the gas” because Trump could win the election.

“Donald Trump says he can still win, and he’s right,” Clinton said. “This has been such an unusual election. I don’t take anyone, any place for granted . . . I am going to work as hard as I can, all the way until the end.”

Clinton and Trump are tied at 44 percent in Iowa, according to a Quinnipiac Poll released Thursday. The poll showed Libertarian Gary Johnson carrying 4 percent support.

The poll signaled a tightening race in Iowa — last month Trump led Clinton by 7 percentage points in the Quinnipiac poll. The GOP nominee led Clinton by an average of 1.4 percentage points this month, according to the poll tracking website Real Clear Politics.

Clinton campaign manager Robby Mook spoke to reporters aboard her campaign plane en route to Cedar Rapids — his appearance coming before reporters learned of the newly surfaced e-mails.

Mook told reporters the campaign expected the race against Trump to get tighter in the final days of the election, despite national polls that show she is ahead by an average 4.4 percentage points, according to Real Clear Politics.

“We are not running away with anything,” Mook said. “We expect those numbers to tighten up over the next few days . . . Republicans who have been wary about supporting Trump, some of them are going to come home and you’re going to see that competitiveness . . . which is why . . . we are going to focus as hard as we can on finding our supporters and getting out the vote . . . complacency is probably going to be our biggest enemy right now.”