Democratic Party presidential bet Joe Biden is holding on to his large lead over president Donald Trump in national polls, and in key battleground states that will guarantee his victory.

With four days to go until remaining Americans vote Nov. 3, Trump has been unable to close his double digit disadvantage in polling averages to more manageable numbers.

The latest polling results from high-quality polling organizations still show Biden with a commanding lead over Trump. Biden has even increased his lead in some polls.

Political pundits note that at this point in the 2016 election, Hillary Clinton's small lead suddenly collapsed to a near tie with Trump after new revelations about her email servers and unwise pronouncements from former FBI director James Comey.

The latest polling numbers:

* The RealClearPolitics general election polling average reveals a 7.5% edge for Biden, the same lead from last week.

* The national polling tracker from FiveThirtyEight sees Biden with a 9% lead over Trump, which is 0.9 percentage point lower than a week earlier.

* The NBC News national polling average has Biden leading by more than 8 percentage points over Trump, 51.9% to 43.7%. This data is based on an unweighted average of the 10 most recent reliable public opinion polls. Biden's lead is almost the same size as it was last week.

* Reuters polling shows Biden increasing his lead by one percentage point to 52% against Trump's 42%.

* Biden has an 89 in 100 chance of winning the Electoral College, and thus the U.S. presidency, said FiveThirtyEight. Trump's chances of pulling this off are only 11 in 100.

Nate Silver, the founder of FiveThirtyEight, said most state polls show Biden's position has improved. Biden is also ahead in the three battleground states of Wisconsin, Michigan and Pennsylvania that allowed Trump to win the presidency in 2016.

Biden leads Trump by 17 points in Wisconsin and seven points in Michigan, according to the latest Washington Post/ABC News poll. He leads Trump by seven points in Pennsylvania based on the most recent poll from Quinnipiac released Thursday.

Biden is ahead of Trump by 24 points among women in Michigan and by 30 points among women in Wisconsin. It's the opposite story among men, however.

Biden trails Trump among Michigan men by double digits. Biden and Trump are running almost even among men in Wisconsin.

Pundits concur Biden appears poised to retain his solid lead through Election Day. Polls show only 5% of likely voters saying they haven't chosen their candidate. Trump will have to win all the remaining undecided voters and flip Wisconsin, Michigan and Pennsylvania to stand a chance of winning next week.