Supporters were scheduled to be out Saturday and Sunday passing out campaign literature around DuPage County.
In Chicago, former Republican Party Chairman Andy McKenna and lieutenant governor candidate Matt Murphy joined volunteers as they called voters.
In suburban Oak Lawn, candidate Adam Andrzejewski spoke to people working on his campaign, shook their hands and thanked them for their help.
Candidate Dan Proft spoke to voters about the state's financial situation Saturday during an event on South Dearborn.
The other two Republican candidates are state senators Bill Brady and Kirk Dillard. Brady campaigned Saturday in suburban Lombard and Elmhurst before heading downstate.
Dillard is visiting the Marion, suburban St. Louis, and Quincy, Ill. areas.