The great majority of Americans who vote on Election Day will use one of two basic technologies: "fill-in-the-bubble" and other optical-scan ballots, or touch-screen computers and other direct recording electronic systems.
Exposure to a range of new ideas and viewpoints that many social media users encounter can occasionally cause people to change their minds about political issues or candidates.
The firm that runs the presidential exit poll expects to interview about 100,000 voters across the country by the time the polls close on election night.
Most Republicans say their party is divided headed into the presidential election, but more view the GOP favorably than did so as recently as six months ago.
Supporters of Hillary Clinton and Donald Trump disagree on whether to support or oppose expanding the production of a range of fossil fuel energy sources.
As the election for a new U.S. president nears, approval of Barack Obama’s job performance is as high as it has been at any point over the last four years.