March 16 (UPI) — Illinois will have busy primary elections Tuesday as voters select a candidate to replace retiring U.S. Sen. Dick Durbin and fill five U.S. House seats without incumbents.

Three House seats are open due to retirements, and two others have incumbents running for Senate. All seats are expected to be filled with Democrats.

There will also be primaries for governor of the state, but there are no Democrats running against incumbent Democrat JB Pritzker.

Illinois voters “have an opportunity for generational turnover — where a boomer senator is stepping down, and you’ve got three Gen-Xers, who’ve been around on the scene for quite some time, trying to get the seat,” Northwestern University political science professor and Democratic strategist Alvin Tillery told ABC News. Tillery is not involved in any Illinois races.

“It could be another 20 or 30 years before we have a Senate race this competitive in Illinois,” he added.

Key Republicans running for Senate are attorney Jeannie Evans and former Illinois GOP chair Don Tracy.

There are 11 Democrats vying for the seat, but the top three are Rep. Raja Krishnamoorthi, Lt. Gov. Juliana Stratton and Rep. Robin Kelly.

Krishnamoorthi has raised the most money — more than $30 million — while Stratton has the benefit of Pritzker’s endorsement.

All three have run on fighting President Donald Trump and opposing Immigrations and Customs Enforcement, which operated heavily in Chicago during Operation Midway Blitz.

“Fighting ICE has become synonymous with opposing and fighting back against Trump,” Brandon Davis, a Democratic consultant who worked on Chicago Mayor Brandon Johnson’s 2023 campaign, told NBC News.

“I’m the only one with the background of standing up to bullies and bad actors, and successfully doing so, and now I have to stand up to Donald Trump,” Krishnamoorthi told ABC News in an interview. He would be the second Indian-American to hold a seat in the Senate.

Stratton is the first Black lieutenant governor in Illinois and told ABC News: “I have the best path in the nation to elect another Black woman to the United States Senate.”

Kelly has the endorsement of longtime Congressional Black Caucus member Rep. Jim Clyburn, D-S.C. He campaigned with Kelly on Tuesday, telling WLS-TV she is “our go-to person on healthcare issues.”

But all three have focused their ads against ICE.

Stratton has said she wants to “abolish” the agency because, “I don’t believe that this agency can be reformed. I want ICE and CBP out of our American cities.”

Krishnamoorthi said he wants to “abolish Trump’s ICE.” He explained he’s pushing for reforms to stop them from wearing masks and stop “roving gangs of ICE and CBP agents stirring up trouble in our cities.”

Kelly has called to dismantle ICE and the whole of the Department of Homeland Security, saying it’s “too big, too unwieldy and they’re not accountable.”