Democratic U.S. Rep. Tammy Duckworth and Republican Sen. Mark Kirk have each won their primaries, setting up possibly one of the most expensive and potentially contentious races for U.S. Senate in November.

Gov. Bruce Rauner is coming up empty in his bid to influence several General Assembly primary races, despite he and allies spending millions of dollars. If tonight’s races are indicative of a wider proxy war with House Speaker Mike Madigan, Madigan appears to be the runaway winner. 

The Greater Metropolitan Missionary Baptist Church at 59th Street and Wabash Avenue is the polling place for the 12th Precinct of the 20th Ward. It's in the Washington Park neighborhood, a largely low-income, African-American community. It's also within Democratic State Rep. Ken Dunkin's 5th Legislative District.

It’s the eve of a particularly heated primary election for a number of heavily contested races, from the increasingly close presidential races in both parties to the high-profile, money-saturated slugfest for Cook County state's attorney.

Outspoken Chicago activist Jedidiah Brown says he's received death threats and has been put on temporary leave from his job following Donald Trump's canceled rally at UIC Pavilion on Friday night, an event Brown says was racially charged and dangerous.

A final look at the stakes in Tuesday’s primary election in Illinois. Chicago Public Schools sues its former CEO and SUPES Academy for $65 million. And former Bears head coach Lovie Smith is back in Illinois to coach football. Joel Weisman and his guests discuss these stories and more in this week’s show.

The Democratic candidates running for Cook County State's Attorney joined us in their final appearance together before Tuesday's primary. The high-profile race comes as faith in the criminal justice system has been shaken not only in Chicago, but also in cities across the nation.

In addition to casting a ballot for candidates in heated races next Tuesday, voters will be tasked with electing Cook County Circuit Court judges. To help voters navigate the dozens of candidates running, Chicago and state bar associations screen and rank each candidate. See their recommendations for the March primary.

Dorothy Brown faces the Democrats vying to replace her in next week's Democratic primary.

It's a simple state legislative primary, but observers view it as ground zero in the standoff between Gov. Bruce Rauner and House Speaker Michael Madigan. Paris Schutz has more on a race that has the money and mud flying. 

We meet two of the Democratic candidates vying to be the nominee for U.S. Senator.

Incumbent Bobby Rush and Alderman Howard Brookins Jr. discuss their race for the Democratic nomination in the 1st Congressional District. 

Teachers threaten an April strike. The Illinois House votes to strip Mayor Rahm Emanuel of school board control. Homicides soar and police morale sinks. And baseball is back. Joel Weisman had guests for these stories and more.

Hear from two of the three Republican candidates running on March 15 to unseat 11th District Democratic Congressman Bill Foster.

Early voting numbers in the March 15 primary are up this year. But in one ward, the numbers are towering over all of the rest.

Hear what viewers had to say about election season and the ongoing state budget battle when we read feedback from the "Chicago Tonight" website, and our Facebook and Twitter pages.