Redistricting

David Niven, a professor of political science at the University of Cincinnati holds a map displaying the wide disparity of Ohio congressional district office locations, with orange locations representing areas whose office are found outside it's own district's bounds, Thursday, April 11, 2019, in Cincinnati. Congressional Democrats nationwide had a good year in 2018, gaining 40 seats. But Republicans held fast with 75% of Ohio’s House seats, despite winning only 52% of Ohio’s congressional vote total. “Not a single seat has changed hands,” said Niven, who testified for those challenging Ohio’s map. “Not a single seat. The point of this map was to build a seawall against the storm, and it has held.” (AP Photo/John Minchillo)

Mindy Nagel poses for a photograph at the threshold of her home, Monday, April 1, 2019, in Cincinnati. Mindy usually votes Democratic; while husband Tom usually goes Republican. But that's only part of it: their bedroom is in Ohio's 1st congressional district while their garage is in the 2nd. (AP Photo/John Minchillo)

This 2011 map provided online by the state of Michigan shows Detroit-area congressional districts. Federal judges ruled Thursday, April 25, 2019, that Michigan must redraw gerrymandered congressional and legislative districts for the 2020 election because Republicans configured them to unconstitutionally guarantee their political dominance and dilute the power of Democratic voters. (State of Michigan via AP)

Activists at the Supreme Court opposed to partisan gerrymandering hold up representations of congressional districts from North Carolina, left, and Maryland, right, as justices hear arguments about the practice of political parties manipulating the boundary of a congressional district to unfairly benefit one party over another, in Washington, Tuesday, March 26, 2019. Democrats and Republicans eagerly await the outcome of cases from Maryland and North Carolina because a new round of redistricting will follow the 2020 census, and the decision could help shape the makeup of Congress and state legislatures over the next decade. (AP Photo/Carolyn Kaster)

FILE - In this Jan. 24, 2019, file photo, the Supreme Court is seen at sunset in Washington. A long-delayed disaster aid bill that’s a top political priority for some of President Donald Trump’s GOP allies is facing a potentially tricky path as it heads to the Senate floor this week. Although the measure has wide backing from both parties, the White House isn’t pleased with the bill and is particularly opposed to efforts by Democrats to make hurricane relief to Puerto Rico more generous. (AP Photo/J. Scott Applewhite, File)

FILE- In this Feb. 2, 2019, file photo former Virginia Governor and U.S. Sen. George Allen, right, talks with supporters during a stop in Bristol, Va. Allen was on a five-city town hall tour of Virginia to discuss the need for nonpartisan and transparent redistricting reform during this year's General Assembly session. In Vermont, a commission submits plans for state House and Senate districts to the state Legislature, which can approve or change them. (David Crigger/Bristol Herald Courier via AP, File)

House Speaker, Del. Kirk Cox, R-Colonial Heights, presides over the House during the session at the Capitol in Richmond, Va., Wednesday, Jan. 23, 2019. A panel of federal judges has chosen a redistricting map for Virginia's House of Delegates that could shift some districts toward Democrats and help the party regain control in this year's election. (AP Photo/Steve Helber)

FILE - In this Wednesday, Jan. 9, 2019 file photo, Gov. Ralph Northam, center, arrives to deliver his State of the Commonwealth address during a joint session of the Virginia Legislature in the House chambers at the Capitol in Richmond, Va. On Thursday, Jan. 10, a federal judicial panel is reviewing proposals to redraw some state House districts that it determined were racially gerrymandered. (AP Photo/Steve Helber)