Many companies featured on Money advertise with us. Opinions are our own, but compensation and
in-depth research may determine where and how companies appear. Learn more about how we make money.

Donald Trump and Ben Carson participate in CNBC's  Your Money, Your Vote: The Republican Presidential Debate  live from the University of Colorado Boulder in Boulder, Colorado, October 28th, 2015.
Donald Trump and Ben Carson participate in CNBC's "Your Money, Your Vote: The Republican Presidential Debate" live from the University of Colorado Boulder in Boulder, Colorado, October 28th, 2015.
Jason Bahr—NBCU Photo Bank via Getty Images

To watch the October 19 presidential debate, click here.

On Tuesday evening at 9 p.m. ET, the fourth Republican debate of the 2016 primary season will take place at the Milwaukee Theatre in Milwaukee, Wisc.

Last week, Fox News announced that Donald Trump, Ben Carson, Marco Rubio, Ted Cruz, Jeb Bush, Carly Fiorina, John Kasich, and Rand Paul all qualified, getting over 2.5% in the most recent polls.

Mike Huckabee, Chris Christie, Bobby Jindal, and Rick Santorum are relegated to the 7 p.m. undercard.

The debate is presented by the Fox Business Network and the Wall Street Journal, and you can stream it online, completely free, at Fox Business's website, whether or not you're a subscriber.

Almost all the debates this year have been free to watch online, and it's allowed many people who don't have TV to participate more fully in the democratic process. Politico reported that there were 1 million people streaming the CNN Democratic debate at one point.

According to Fox, the agenda for this debate focuses on "jobs, taxes, and the general health of the economy, as well as domestic and international policy issues."

Read next: 7 Streaming TV Packages That Will Let You Cut the Cord For Good