Updated 12:43 with comments from hearing.
Updated 4:29 p.m. with more commentary from hearing, additional information.
A Missouri political science professor says the state's new congressional districts could have been more compact.
University of Missouri-St. Louis professor David Kimball was the first witness during a court hearing about the constitutionality of the state's new U.S. House districts.
Kimball said the districts could be considered divided in a way that gives one political party an advantage, which is known as gerrymandering.