Republican Donald Trump is crisscrossing the country in a last-minute blitz ahead of Tuesday's general election. Pictured here are enthusiastic supporters in Boulder, Colorado, Nov. 5, 2016. Carlo Allegri/Reuters

With less than 48 hours to go before polls open on Election Day Tuesday, the latest national presidential polls gave Democrat Hillary Clinton a slight edge over Republican Donald Trump as the candidates blitz swing states — some of which had been thought to be solidly in the Clinton camp earlier in the campaign.

The NBC/Wall Street Journal poll indicated Sunday Clinton has a 4-point lead, and the ABC/Washington Post daily tracking poll gave Clinton a 5-point edge while the Los Angeles Times/University of Southern California daily tracking poll and the Investor’s Business Daily/TechnoMetrica Market Intelligence poll had Trump ahead by 5 points and 1 point, respectively.

In the swing state of New Mexico, worth five electoral votes, the Albuquerque Journal poll indicated Clinton is leading 45 percent to 40 percent. The CBS/YouGov poll in Florida, worth 29 electoral votes, had the candidates tied at 45 percent apiece.

The RealClear Politics average of major polls indicated Clinton had a 1.8-point lead, well within the margins of error.

The numbers came as Trump planned to hit Sioux City, Iowa; Minneapolis; Sterling Heights, Michigan; Moon Township, Pennsylvania, and Leesburg, Virginia, Sunday. He is to keep the pressure on Monday, with appearances in Sarasota, Florida; Raleigh, North Carolina; Scranton, Pennsylvania; Manchester, New Hampshire, and Grand Rapids, Michigan.

Clinton is pairing up with celebrities in her final push and visiting a number of states that had been considered safe bets including Michigan and Pennsylvania. Clinton was to appear Sunday in Cleveland with basketball star LeBron James, and Manchester, New Hampshire. A Miami fundraiser with Cher also was scheduled. Clinton has stops Monday scheduled in Raleigh, North Carolina; Grand Rapids, Michigan, and Philadelphia where she is to be joined by President Barack Obama, first lady Michelle Obama, husband Bill and daughter Chelsea.

The president and first lady have been campaigning hard for the former secretary of state as has Vice President Joe Biden and former rival Sen. Bernie Sanders of Vermont. Before joining his wife in Philadelphia Monday, former President Bill Clinton is planning to campaign in Lansing, Michigan.

Michigan had been considered a sure bet for Clinton, but a Detroit Free Press poll last week indicated Clinton’s double-digit lead had narrowed to 4 points with 13 percent of voters still undecided. Clinton campaign manager John Podesta on NBC’s “Meet the Press” and ABC’s “This Week” Sunday tried to spin the campaign’s last-minute trips to Michigan as just smart scheduling since the state does not have early voting.

Trump campaign manager Kellyanne Conway, however, told CNN’s “State of the Union” Clinton’s emphasis on Michigan is a sign the “solid blue wall” in the Upper Midwest is crumbling. Republican Chairman Reince Priebus said on “This Week” the momentum is with the Republicans, both on the presidential and Senate levels.

At an appearance in Reno, Nevada, Secret Service agents Saturday rushed Trump from the podium after someone in the crowd yelled gun. No weapon was found, but Trump’s son, Donald Jr., retweeted a supporter’s allegation there had been an assassination attempt.

Conway declined to disavow the tweet, noting someone in the crowd had tried to raise a pro-Clinton sign and was escorted out.