Voters have ousted the Chicago area's top prosecutor in a Democratic primary race focused on the office's handling of the shooting death of a black teenager at the hands of a white police officer.

Kim Foxx's victory Tuesday over Cook County State's Attorney Anita Alvarez sends her to a November matchup in which she will be heavily favored.

Foxx, a former aide to the Cook County board president, criticized Alvarez over the Laquan McDonald shooting, as protesters scrutinized her investigation as a cover-up.

The U.S. attorney's office in Chicago says it will help monitor the primary election in the city and surrounding suburbs for illegal voting activity.

A statement from the office says a telephone hotline will be set up for people to call in any suspicious activity on Tuesday. The hotline number is 312-469-6157.

Illegal activity under federal law includes trying to buy or sell votes, the intimidation of voters and the stuffing of ballot boxes.

Democratic presidential candidate Hillary Clinton is returning to Illinois to campaign ahead of the state's March 15 primary.

Clinton will appear at an event in the Chicago suburb of Vernon Hills.

Her campaign organization says Clinton will discuss her plans to “break down the economic barriers that favor those at the top and build an economy that works for everyone.''

Clinton is coming off a loss Tuesday to Vermont Sen. Bernie Sanders in the Michigan primary.

She had an overwhelming victory in Mississippi.

Julie Jacobson/AP Photo

Former President Bill Clinton says his wife, former Secretary of State Hillary Clinton, is a “change-maker” who will create a more inclusive economy and politics.

That was the former president’s message as he made stops in the Chicago area Tuesday, starting his morning shaking hands on the West Side of Chicago. Later, he gave a 45-minute, almost academic speech at Beth Emet Synagogue in Evanston to hundreds of supporters.

Amanda Vinicky / WUIS

If you vote in Illinois March 15, most of the names you'll see at the top of the ticket are well-known. Others, less so.

Hillary Clinton is not the only candidate with Illinois ties running for President; Illinois Democrats next week can also cast a vote for Willie Wilson.

In Chicago, the name "Willie Wilson" may ring a bell; he finished a distant third in the city's race for mayor last year.

Now, he's aiming for the White House.