A proposed constitutional amendment that would shrink the size of the Missouri House from 163 members to 103 has passed the Missouri Senate.
If it passes both chambers, the measure would go before voters next year.
State Senator Jim Lembke (R, Lemay) says the downsizing would not happen right away.
The Missouri House has rejected the changes made to its redistricting map by the Senate, which on Wednesday took its own map and substituted it in the House bill before passing it.
The main sticking point appears to be how much of Jefferson County will fall into the rural southeastern Missouri congressional district.
The Missouri House has passed the Aerotropolis bill, which is designed to turn Lambert Airport in St. Louis into a global air freight hub.
The bill would provide around $480 million in tax incentives, which companies could use to build cargo facilities near Lambert Airport.
The congressional redistricting map passed by the Missouri House last week has narrowly passed a State Senate committee.
A Missouri House committee has rejected a proposal to downsize its own chamber.
The proposed constitutional amendment would have reduced the state House from 163 members to 103 members starting in 2015. A House committee voted Thursday to reject the plan.
Critics have expressed concerns that the smaller number of lawmakers would mean the public would not be as effectively represented.
Supporters say that reducing the number of lawmakers would help state government save money.
St. Louis Public Radio is a service of the University of Missouri-St. Louis.