Who will win the race to the White House? Presidential polling averages in seven battleground states as of Sept. 18.

Vice President Kamala Harris on Wednesday criticized Republican Donald Trump's promise to deport millions of people who are in the United States illegally, questioning whether he would rely on massive raids and detention camps to carry it out.

After running neck-and-neck with Trump, Harris is ahead in all polls now, according to realclearpolling.com. Harris enjoys a 51.8% chance of becoming president in November's election, while Trump has a 46.9% chance. This differs from a week ago when the two were virtually tied. Betfair gives Harris a 50% chance, Trump a 45% chance.

The union wanted both candidates to commit to not deploying the Railway Labor Act to resolve contract disputes and avoid a shutdown of national infrastructure.