Democratic candidate Kamala Harris and Republican Donald Trump remain in a tight race in the country’s seven battleground states two days before the US presidential election, according to the final New York Times/Siena College poll, Reuters reports.

The opinion poll showed Vice President Harris with marginal leads in Nevada, North Carolina and Wisconsin and former President Trump just ahead in Arizona.

The two are in close races in Michigan, Georgia and Pennsylvania, according to the poll, which surveyed 7,879 likely voters in the seven states from October 24 to November 2. In all seven states, the matchups were within the poll’s 3.5 per cent margin of error.

About 40pc of the respondents had already voted and Harris led among those voters by 8 percentage points, while Trump leads with voters who have said they are very likely to vote but have not yet done so, the poll found.

The tied race in Pennsylvania shows Trump gaining momentum in a state Harris had led by four percentage points in all prior New York Times polls, the outlet said.

Both candidates are campaigning in battleground states this weekend, with Trump set to appear in Pennsylvania, North Carolina and Georgia on Sunday, while Harris will campaign in Michigan.