Dart (born May 22, 1962) is an American attorney, politician, and law enforcement officer serving as the Sheriff of Cook County, Illinois.

He earned a Bachelor of Arts degree in history and general social studies from Providence College and a Juris Doctor from Loyola University Chicago.

In the 1992 Democratic primary, Dart defeated Nelson Rice Sr., a five-term incumbent lawmaker for a seat in the Illinois House of Representatives.

[citation needed] In November 2002, Dart was the Democratic nominee for state treasurer of Illinois but lost to incumbent Republican Judy Baar Topinka.

On November 2, 2010, Dart faced Republican Frederick Collins in the race for the Cook County Sheriff's office and won handily with 69.37% of the vote.

Dart stated that many of the people being evicted were renters who had faithfully paid their rent but had not known that their landlord was in financial trouble.

"[9] The Illinois Bankers Association was critical of Dart, accusing him of "ignoring his legal responsibilities" and of engaging in "vigilantism".