CHICAGO (AP) -- Illinois voters can officially head to the polls as Monday marks the start of early voting for the state's primary election.

The March 20 primary includes nominating contests for the Illinois House and Senate, county offices, congressional races and a number of referendum questions.

Questions concerning the voting process can be directed to your  local county clerk''s office.

Numerous polling places will be open for early voting statewide, including 51 in Chicago, according to the Illinois Board of Elections. The Chicago Board of Elections offices will conduct early voting seven days a week, including 9 a.m. to 3 p.m. on Sundays.

Suburban voters can go to more than 40 locations in the Chicago area.

Early voting sites include 31 in Will County, 20 in Lake County, 15 in Kane County and 10 locations each in DuPage and McHenry counties.

Early voting runs until March 15.

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