A federal judge has allowed Missouri’s top court to proceed with a contempt hearing Thursday against Republican Secretary of State Denny Hoskins in a tense and twisting legal battle over whether new congressional districts supported by President Donald Trump can be used in the November election.

Missouri’s battle over its congressional districts has spanned more than a year and spawned confusion over which districts will be in place for voters.

The state’s top court previously ordered Hoskins not to use a Trump-backed map in the general election and instead use districts passed after the last census. But U.S. District Judge Stephen Clark on Tuesday barred Hoskins from using anything other than the new map Trump supports.