Republican presidential candidate Donald Trump and Democratic presidential candidate Hillary Clinton at campaign rallies in North Carolina, Nov. 3, 2016.
Republican presidential candidate Donald Trump and Democratic presidential candidate Hillary Clinton at campaign rallies in North Carolina, Nov. 3, 2016.

Hillary Clinton and Donald Trump held simultaneous dueling campaign rallies Thursday night in North Carolina — a state that must be won in order to win the White House next Tuesday.

Clinton’s former rival for the Democratic nomination, Senator Bernie Sanders, introduced Clinton in Raleigh, while Republican Trump was a short distance away, speaking to a largely pro-military crowd in Selma.

Both traded the usual insults about the other's fitness for office while appealing to their followers that their vote matters.

Earlier in Greenville, North Carolina, Clinton warned that Trump "always puts himself first and doesn't care who gets hurt along the way."

She said Trump simply cannot help himself when he insults women and minorities, adding that he is out of his depth and very dangerous.

"Across America, people are rejecting Trump's dark vision for one that is hopeful and inclusive and unifying," she said.

WATCH: Clinton Warns that Trump Could 'Start a War'

Clinton's top booster, President Barack Obama, campaigned for her in another must-win state — Florida.

At a rally in Jacksonville, Obama noted that the polls are close, and he said the outcome cannot be taken for granted.

"You have this precious chance to shape history,” he said. “Don't let it slip away."

Obama: Court vacancy ‘ain’t right’

Obama also tore into Senate Republicans who have refused to consider his Supreme Court nominee, saying they want to wait until there is a new president.

But many of those senators are now vowing that they will block anyone Clinton nominates.

Obama said the people's choice does not matter to them. "C'mon, man ... it ain't right," he said, evoking both cheers and laughter from the crowd.

Justice Antonin Scalia's death in February left a vacancy on the High Court, which now has just eight justices instead of the usual nine. A four-four vote on cases means an earlier ruling stands and the case is sent back to a lower court, leaving major questions unresolved.

The Senate has refused to hold hearings on Judge Merrick Garland, Obama's choice to replace Scalia.

WATCH: Trump Says Clinton Shouldn't be Allowed to Run

Trump: ‘Here we go again’

Trump also was in Jacksonville on Thursday, predicting that if Clinton wins, she would be impeached over her emails and questions about the Clinton Foundation charity when she was secretary of state.

He did not let the crowd forget that her husband, former President Bill Clinton, was impeached in 1998 for lying about an affair with a White House intern.

"Here we go again with the Clintons,” Trump said. “You remember the impeachment and the problems. That's not what we need in our country, folks. We need someone who is ready to go to work."

Campaign 2016 Kaine
Democratic vice presidential candidate, Sen. Tim Kaine, D-Va., speaks during a campaign stop in Phoenix, Arizona, Nov. 3, 2016.

Kaine makes history

Meanwhile, Clinton's vice presidential running mate, Tim Kaine, made history Thursday in Arizona, becoming the first major party candidate to make a campaign speech entirely in Spanish.

Kaine spoke to a largely Hispanic crowd. Arizona is a traditionally Republican state, but its growing Hispanic population opposes Trump's plans to restrict immigration and build a wall along the Mexican border.

Two new major national polls Thursday showed Clinton edging ahead of Trump among likely voters, with The New York Times/CBS News poll giving her a 45-to-42 percent lead and The Washington Post-ABC News poll showing her with a 47-45 advantage.