Two Republicans who have already announced their intention to challenge U.S. Rep. Cheri Bustos, D-Ill., in next year's election filed petitions on Monday for the March primary.
Mark Kleine, of Galesburg, and William "Bill" Fawell, of Galena, both filed petitions with the Illinois State Board of Elections.
Kleine, a businessman, announced his candidacy in August, while Fawell did so in September.
Fawell has called for term limits, moving more power from the presidency to Congress and legislation requiring an audit of the Federal Reserve.
Kleine has touted his experience as a businessman and says he's a political outsider.
Bustos, a Democrat who was first elected in 2012, is expected to file her nomination papers on Tuesday, according to a spokesman.
Bustos has emerged from the 2016 election with a higher profile role in her party and has called for a greater emphasis on the economy.
In local state legislative districts:
State Sen. Neil Anderson, R-Andalusia, has filed nomination papers in the 36th Senate District.
Rep. Tony McCombie, R-Savanna, and Democrat Joan Padilla, of Sterling, have filed papers in District 71, according to the state board of elections website.
In District 72, Rep. Mike Halpin, D-Rock Island, also filed papers Monday.
The deadline for filing nomination papers is Dec. 4. The primary will be March 20.