As the final day of voting in the United States nears, President Donald Trump on Sunday sprinted across battleground states with appearances in Iowa and Michigan as he seeks to rally supporters in his contest with Democratic challenger Joe Biden, who in pivotal Pennsylvania implored his supporters to turn out to vote.

A new NBC News/Wall Street Journal poll indicated that the president trails Biden by 10 points nationally in the presidential election, while a string of swing state polls suggest tighter margins.

Interactive page: X Factors in the U.S. Election

Trump is aiming to avoid becoming the first incumbent president to lose a re-election bid since fellow Republican George H.W. Bush in 1992. His frenetic schedule for Sunday also included stops in North Carolina, Georgia and Florida. 

Buffeted by snow flurries in Washington, a town north of Detroit in Michigan, in his first appearance of the day Trump wore his trademark red cap emblazoned with the words "Make America Great Again" and was bundled up in an overcoat as he addressed a boisterous crowd on a cold and blustery morning.

Trump predicted he would repeat his 2016 victory in Michigan and touted his efforts to create auto jobs, a key issue for the auto manufacturing state.

"We brought back your car industry. Your car industry was finished. You would have had nothing left," Trump said.

Motor vehicle manufacturing jobs in Michigan have fallen by about 5,000 since Trump took office, and there are about 13,000 fewer jobs making vehicle parts.

Trump then addressed another spirited rally in windy Dubuque, where he made a pitch to Iowa farmers in the important corn-growing state.

Polls suggest Trump is still close in enough battleground states that could give him the 270 votes needed to win in the state-by-state Electoral College that determines the overall victor.

Election 2020: How is a U.S. president elected?

Graphics: Biden leads Trump in battlegrounds

The race remains a toss-up in Florida, North Carolina and Arizona, Reuters/Ipsos polls indicated, while Trump trails by 7 percentage points in Pennsylvania and 10 percentage points in Michigan and Wisconsin.

In his 2016 victory over Democrat Hillary Clinton, the real estate developer and reality TV personality-turned-politician took Pennsylvania and Wisconsin as well as Michigan, states that for decades had gone in the Democratic column.

Biden is scheduled to campaign again on Monday in Pennsylvania, the state where he was born, with events in Philadelphia and Pittsburgh. Biden also added a stop in Ohio on Monday, indicating his campaign views that state as winnable.

Trump is due to stage 10 rallies – five a day – on Sunday and Monday, the campaign's busiest stretch, with Monday appearances planned in North Carolina, Pennsylvania, Wisconsin and back in Michigan.

(With input from Reuters)