The race between Democratic Gov. Pat Quinn and Republican challenger Bill Brady has been dominated by the state's budget crisis and weak economy. But the two also have sharp differences on an array of social issues.
Here's a look at where they stand:
Brady opposes abortion even in cases of rape and incest. He would make an exception only to save the life of the mother. He supports parental notification before teens can obtain abortions.
Quinn promises to veto "any legislation that restricts a woman's right to choose," including parental notification.
Brady and Quinn both support the death penalty in theory. Brady says it's time to end the state's long moratorium on carrying out executions.
Quinn wants to keep the moratorium in place.
Brady has sponsored legislation saying pharmacists don't have to fill prescriptions for emergency contraception if it would violate their religious beliefs.
Quinn takes the position that it's a pharmacist's job to fill prescriptions without passing judgment.
Brady has said laws that require men and women be paid equally for the same work are "government intrusion." He said the free market should determine salaries, though he voted for equal-pay legislation in 2003.
Quinn supports equal-pay legislation.
Brady says he accepts the theory of creation and believes the world has evolved since then. He supports letting schools teach creationism if they want to.
Quinn says he accepts the evidence for evolution and sees no conflict between that and his religious faith.
Brady opposes both civil unions and same-sex marriage. He does not think gay people should be protected from job and housing discrimination.
Quinn supports civil unions but not gay marriage and backed adding gay people to the state's anti-discrimination law.
GLOBAL WARMING
Brady rejects the idea that humans are contributing to global warming.
Quinn says it's a serious problem.
GUN CONTROL
Brady opposes "any further restrictions" on gun ownership. He supports legalizing "concealed carry" of handguns.
Quinn wants to ban assault weapons and would veto legislation allowing residents to carry concealed guns.
MEDICAL MARIJUANA
Brady opposes allowing the use of marijuana for medical purposes.
Quinn says he would consider it if legislators passed such a bill.
MINIMUM WAGE
Brady consistently opposes increasing the minimum wage and at least once said wages should be determined exclusively by the free market. He wants to hold the Illinois minimum wage flat until the federal minimum catches up.
Quinn supports Illinois having a higher minimum wage.
NEW YORK MOSQUE
Brady and Quinn both said it would be improper to build a mosque near the site of the World Trade Center terrorist attacks and said they hoped the plan would be dropped.