Some technical glitches with voting machines reported, and bad weather holds down turnout.
Lawmakers have referred an unusually large number of constitutional amendments to the ballot for voters to decide.
A bill that could change the way ballots are cast, awaits one more Senate vote before moving to the house.
Early voting for the March 18 primary begins across Illinois on Monday. Meanwhile, supporters of an early voting period in Missouri are gathering petition signatures.
The committee heard testimony Monday from some former poll workers who say the machines now used in Missouri malfunction and miscount votes.
Missouri voters will get to cast ballots in November on another key component of the health care law — insurance exchanges.