Stopped at Zombie Burger in Des Moines. I think my costume is scarier than these zombies. pic.twitter.com/dB1GmylxU0 — Dr. Rand Paul (@RandPaul) October 31, 2015

Republican presidential candidate Dr. Rand Paul went to a Des Moines Halloween costume contest in what many are calling "the scariest costume of all" -- the $18 trillion national debt.

The Kentucky senator's darkly comical, attention-raising turtleneck caused some conversation on Twitter.

Rand Paul has the best costume in the history of costumes. He went as the national debt. pic.twitter.com/mV1z40yXc6 — Gino Vee (@GinoPlaysDrums) October 31, 2015

Scariest Halloween costume in Iowa tonight? @RandPaul at Zombie Burger dressed as the national debt! #StandwithRand pic.twitter.com/C6LE5UUewT — David Fischer (@FischerForIowa) October 31, 2015

Check out more photos below.

Having a great time at my Halloween party in Iowa! My costume is still the scariest. pic.twitter.com/w8mTRd7cK2 — Dr. Rand Paul (@RandPaul) October 31, 2015

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