Voters in Illinois are heading to the polls to make their big picks ahead of tonight's primary results in the state, but who voters decide upon isn't the only thing making headlines today.

The media recently got wind of two of the top contenders' secret service code names. According to GQ, Mitt Romney's name is "Javelin," which is the name of

a car formerly made by the company AMC -- a company once run by his father, George.

"Petrus" is what former Pennsylvania Sen. Rick Santorum decided upon for his. The name is Latin for "Peter," which he chose in honor of his grandfather, whose name was Pietro.

Let Megyn know what your code name would be by responding to her on Twitter @MegynKelly. Plus, do you follow Fox News Insider? If you don't already, start now!