The push to legalize marijuana in Illinois that began in earnest more than two years ago took a major step forward Saturday as Gov. JB Pritzker unveiled a measure that would take effect Jan. 1.

But it remains unclear whether the marathon effort — launched in March 2017 by state Sen. Heather Steans (D-Edgewater) and state Rep. Kelly Cassidy (D-Rogers Park) — will make it over the finish line in less than a month.