Republican US presidential nominee Donald Trump and Democratic US presidential nominee Hillary Clinton greet one another as they take the stage for their first debate at Hofstra University in Hempstead, New York, US, September 26, 2016. [Photo/Agencies]

COCONUT CREEK, Florida - Democratic presidential candidate Hillary Clinton warned her supporters on Tuesday against complacency as opinion polls show her holding a clear lead over Republican rival Donald Trump with two weeks left until the Nov 8 election.

Clinton told voters in Florida, one of the battleground states where the election will likely be decided, that Democrats could not afford to relax.

"I hope you will come out and vote because it's going to be a close election. Pay no attention to the polls. Don't forget, don't get complacent, because we've got to turn people out," she told a rally in Coconut Creek, standing in front of a large sign reading: "Vote Early."

Trump also campaigned in Florida on Tuesday. He blasted recent spikes in premiums for health insurance under President Barack Obama's Affordable Care Act, known as Obamacare. Trump promised to repeal and replace the healthcare law as soon as he takes office.

"This is why we have to drain the swamp and repeal and replace Obamacare immediately, and I'm the only candidate running for president who will do it," Trump said.

On Monday, the US government said the average premium for insurance plans sold on Healthcare.gov for 2017 rose by 25 percent compared with 2016.

But with polls showing Trump trailing Clinton, Trump has asked his campaign to cut back on work identifying candidates for jobs in his future administration and focus instead on bolstering his chances on Nov 8, according to two people familiar with the campaign's inner workings.