Donald Trump and his supporters say he is the only candidate able to change a broken political system in Washington and make it work for the American people.

He promises to cut taxes across the board; renegotiate trade deals to make them more favorable for the United States; create 25-million new jobs over the next 10 years; and grow the U.S. economy by an average of 3.5 percent per year.

Trump vows to abolish Obamacare and replace it with health savings accounts; increase the size of the U.S. military; end the strategy of nation-building and regime change and militarily crush the Islamic State.

And then there’s the “impenetrable” wall along the U.S. southern border Trump says he will build, and make Mexico pay for it to stem the tide of illegal immigration.

Critics say Trump is a narcissistic, misogynist demagogue whose admiration of Vladimir Putin is disquieting, if not disqualifying.

With fewer than 100 hours to go before polls open on Tuesday, can Donald Trump pull off one of the most improbable victories in American political history?