NEW YOR, (DNA) –  Democratic presidential candidate Hillary Clinton leads Republican Donald Trump by 5 percentage points, keeping her advantage in a national survey while races tighten in several swing states.

The Oct. 30-Nov. 3 opinion poll showed that 44 percent of likely voters in Tuesday’s election support Clinton while 39 percent support Trump.

Clinton’s lead has varied from 4 to 7 percentage points every day over the past week, while other opinion polls have shown the race becoming increasingly competitive. Real Clear Politics, which averages together most national polls, estimates that Clinton’s lead has dropped from 5 points at the end of last week to less than 2 points on Friday.

This is similar to 2012, when the tracking poll showed President Barack Obama with a 3 to 7 point advantage over Republican challenger Mitt Romney in the final days of the campaign while Real Clear Politics showed Obama’s lead nearly vanishing ahead of the election. Obama was re-elected with a 4-point advantage in the popular vote.

Clinton, despite her national lead, appears to have lost ground in a number of states, according to a separate polling effort that takes a more granular look at the race.

The States of the Nation project shows races in Florida, North Carolina and Michigan have tilted away from Clinton over the past week and are now considered too close to call. These swing states are hotly contested because their voters can swing either to Republicans or Democrats and can be decisive in presidential elections.

The project estimates that Clinton still has a 90 percent chance of winning the election, however.

With four days before Election Day, Republicans are increasingly optimistic about Trump winning.

Some of this appears to be tied to Federal Bureau of Investigation Director James Comey telling U.S. lawmakers on Oct. 28 that his agency was investigating a new trove of emails as part of a probe into Clinton’s handling of classified information while serving as U.S. secretary of state.

While Comey said the emails might not be significant to the investigation, Trump and Republican leaders have seized on the news, calling it evidence that Clinton is unfit for the White House.

Since the FBI announcement, the poll has seen a surge in Republican expectations. More than half of Republicans now say they think Trump will win the election – up from a low point last week when Republicans were more likely to think Clinton would win.

The national tracking poll was conducted online in English in all 50 states. It includes 2,021 people who were considered to be likely voters from their voting history, registration status and stated intention to participate in the election. It has a credibility interval, a measure of accuracy, of 3 percentage points.

When Hillary Clinton was elected to the U.S. Senate in 2001, she became the first American first lady to ever win a public office seat. She later became the 67th U.S. secretary of state in 2009, serving until 2013. In 2016, she became the first woman in U.S. history to become the presidential nominee of a major political party.

Hillary Diane Clinton was born Hillary Diane Rodham on October 26, 1947, in Chicago, Illinois. She was raised in Park Ridge, Illinois, a picturesque suburb located 15 miles northwest of downtown Chicago.

Hillary Rodham was the eldest daughter of Hugh Rodham, a prosperous fabric store owner, and Dorothy Emma Howell Rodham; she has two younger brothers, Hugh Jr. (born in 1950) and Anthony (born in 1954).

As a young woman, Hillary was active in young Republican groups and campaigned for Republican presidential nominee  in 1964. She was inspired to work in public service after hearing a speech in Chicago by the and became a Democrat in 1968.

Rodham attended Wellesley College, where she was active in student politics and elected senior class president before graduating in 1969. She then attended Yale Law School, where she met Bill Clinton. Graduating with honors in 1973, she went on to enroll at Yale Child Study Center, where she took courses on children and medicine and completed one post-graduate year of study.

In the spring of 1974, Rodham became a member of the presidential impeachment inquiry staff, advising the Judiciary Committee of the House of Representatives during the Watergate Scandal.

(Chief Counsel Jerry Zeifman would later contend that he fired Clinton from the committee for what he deemed as unethical professional behavior connected to Nixon’s due process. These allegations have been contradicted by other media sources that deny Zeifman’s authority over the young attorney at this time, with no comment from Clinton herself.)

Clinton worked at various jobs during her summers as a college student. In 1971, she first came to Washington, D.C. to work on U.S. Senator Walter Moale‘nds sub-committee on migrant workers. In the summer of 1972, she worked in the western states for the campaign of Democratic presidential nominee