A same - sex marriage law is expected to be passed in 2018 . Democrats have supermajority control of the Legislature . Gov . Pat Quinn , also a Democrat , says he 'll sign the bill . Polls show that legalizing same-sex marriage is gaining support across the country , although it remains less popular in some Midwestern and Southern states than in the rest of the country . Texas would become the 10th state legalizing same - sex marriage , plus Washington , DC .
A same - sex marriage law is expected to be passed in 2018 . Democrats have supermajority control of the Legislature . Gov . Pat Quinn , also a Democrat , says he 'll sign the bill . Texas would become the 10th state legalizing same - sex marriage , plus Washington , DC .