¶ Includes bipartisan, politician, and independent commissions.
* In Kansas and Kentucky, Republicans have a veto-proof majority. In Massachusetts and Maryland, Democrats have a veto-proof majority.
** In North Carolina, the governor cannot veto a congressional plan.
† Advisory bodies draw maps in Iowa, New Mexico, New York, Rhode Island, and Utah, but maps can be overridden through the legislative process by Republicans in Iowa and Utah and by Democrats in New Mexico, New York, and Rhode Island.
‡ In Connecticut, Democrats do not have the 2/3 legislative majority in each house necessary to pass maps on their own.
§ Washington's commission maps can be amended only with a 2/3 majority in the legislature. Virginia's legislature cannot override its commission (mapdrawing authority is ceded to the Virginia Supreme Court if a map fails to pass).