As the race for the Republican nomination for President heats up, we can't forget about important U.S. Senate races across the county. And we have what could be the most hotly-contested race right here in Illinois.

Democrats believe U.S. Senator Mark Kirk is highly vulnerable as a sitting Republican in what's been a pretty blue state in the past few decades. The likely Democrat nominee is Rep. Tammy Duckworth, though she has her own primary fight to survive first.

The great Bill Kristol, editor of The Weekly Standard, was in Chicago this week for an event in support of Sen. Kirk. He joined the show to discuss ISIS, national security, and why he believes it's important to send Kirk back to Washington.

Here's our full conversation with Bill Kristol:

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