Mitt RomneyAfter two dramatic debates, with a race that is all but tied nationally, we have come to this -- one final 90-minute showdown that may decide who becomes the next president of the United States.

Not since 1980, arguably, has one debate carried such significance. And other than 2004, it's hard to isolate a debate on foreign policy that could decide who wins the next election.

But this last debate isn't just about foreign policy. It's about something much bigger. It's about leadership and decision-making. It's about confidence and strength of purpose. It's about what kind of president the American people can expect in the face of international crisis.

During this debate, the smart candidate will use his command of the world stage to demonstrate not just a knowledge of foreign policy, but why it impacts the domestic issues that matter most to the American people in this election. Don't care about the rise of China? Most Americans may not, but we do care about China's impact on America's job market. Voters may not care about the Middle East or Europe as much as they care about more-obviously domestic issues, but they want a leader who will make sure America has low energy prices and competes and wins in a global economy.

In a race like this, where the few undecided voters are looking for a good reason -- really, any reason -- to make their final choice, these arguments and this debate will make the difference. All that being said, click through the slides below to see what you should be watching for tonight.

Chris Kofinis is a Democratic strategist. Frank Luntz is a Republican pollster and strategist. AOL has an elections content partnership with Chris Kofinis and Luntz Global.

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