Five Republican candidates are vying to take on Illinois’ long-serving and well-funded incumbent senior senator, Dick Durbin, who is running for a fifth term this fall. The 75-year-old faces no opponents in this month’s Democratic primary. He was first elected to his seat in 1996.

More: 2020 Voter Guide to the Primary Election

Durbin’s formidable campaign fund and record of electoral wins hasn’t deterred the GOP hopefuls, who join “Chicago Tonight” for a candidate forum:

Mark Curran, an attorney who served as Lake County sheriff from 2006 to 2018, says the cost of living and the economy are key to Illinoisans, and vows to support the Trump administration’s economic policies.

Tom Tarter, a retired cancer surgeon from Springfield, says single-payer health care would make medical treatment far worse for patients and lead to less innovation.

Casey Chlebek of Glenview, who works in real estate management and is a former IT professional, says Durbin’s economic record is sorely lacking. He wants to create economic zones in Illinois to spur high-tech job growth.

Peggy Hubbard, a former IRS analyst and law enforcement officer from downstate Belleville, near St. Louis, says she’s running to reign in wasteful spending in hopes of reducing taxation.

Robert Marshall, a Burr Ridge physician who’s previously run for Congress and for governor, among other offices, is touting a plan to split Illinois into two or three separate states in hopes of renegotiating pension obligations and other debts.