WASHINGTON: Kamala Harris clapped back at Donald Trump on Thursday over what she called his "very offensive" remarks about women, returning reproductive rights to the fore as the rivals take their knife-edge White House race to western battleground states.

As each candidate seeks even the slightest of advantages, they have also homed in on immigration and are aiming to woo crucial Latino voters with just five days before the Nov 5 election.

Pop icon Jennifer Lopez will bring her star power to the stage for Harris in Las Vegas, Nevada, as the Democratic vice president and Republican former president chase one another through the seven swing states expected to decide the election winner.

Trump too held a rally on Thursday in Nevada, as well as a scheduled interview in neighboring Arizona with ex-Fox News host Tucker Carlson.

Harris began her day in Wisconsin, lashing out at Trump over his remarks the previous day when he raised eyebrows by telling a rally that "I want to protect the women of our country... whether the women like it or not."

She branded the comments "offensive to everybody" and "very offensive to women in terms of not understanding their agency."

Trump, she told reporters, "does not prioritise the freedom of women and the intelligence of women to make decisions about their own lives and bodies."

Reproductive rights have served as a rallying cry for Democrats – and an Achilles heel of sorts for Trump – ever since the conservative-dominated US Supreme Court ended the federal right to abortion in 2022, resulting in what Harris has been quick to call "Trump abortion bans" in multiple states.

With this year's election showing a demonstrable gender gap, with women voters tilting toward Harris, and Trump earning support from most men, abortion rights could play a determining role in the outcome.

Both campaigns have been jolted in recent days after controversies stemming from a remark by a warm-up speaker at a Trump rally, which initially blew back against Republicans before a damaging gaffe from President Joe Biden.

Harris made political hay from the comedian calling the US territory of Puerto Rico a "floating island of garbage."

Her campaign won the backing of Puerto Rican celebrities Lopez, rapper Bad Bunny and singer Ricky Martin, and released a Spanish-language ad with the voice-over concluding: "On Nov 5, Trump will find out that one person's trash is another's treasure."

But Harris found herself on the defensive after Biden appeared to call Trump supporters "garbage" – prompting the Democratic candidate to state she disagreed with criticism of people based on who they vote for.

Trump, who himself has branded Harris's allies "garbage" and "scum," pounced on the misstep with a publicity stunt as he climbed into a Trump-branded garbage truck.

The 78-year-old also visited New Mexico on Thursday, and Virginia tomorrow – surprising calls given that polls suggest the two states will go to Harris.

More than 60 million Americans have cast their ballots via early or mail-in voting so far, almost 40 per cent of the 2020 total.

Campaigning out west, Trump is betting frustrations over the Biden-Harris administration's immigration policy will swing border state Arizona back in his favor after Biden beat Trump there in 2020.

Latino voters traditionally have aligned more with Democrats, but recent polling shows a noticeable trend toward Republicans.

The latest New York Times/Siena poll showed Harris with 52 per cent of support among Hispanic voters to Trump's 42 per cent.

Both candidates will be in North Carolina on the weekend as part of a blitz of battleground states, with Harris also visiting Georgia, Wisconsin, Michigan and Pennsylvania before Election Day.

Speaking on Wednesday in Wisconsin, the Democrat pushed her message of unity.

"Folks are exhausted and want it to stop, the pointing fingers. It is time that we start locking arms together as a people who rise and fall together," she said.

Trump – who has 34 felony convictions for crimes connected to the 2016 election – is expected to reject Tuesday's election result if he loses.

In Georgia, where Trump faces charges he interfered in the 2020 election, early voting is shattering records, said the state's secretary of state, Brad Raffensperger.

He told CNN all early votes will be counted within an hour of polls closing, with nearly all results from the state's counties reported "before the end of the night" Tuesday.

 - AFP