Colorado Politics: A state law seeking more transparency in ballot measures that raise or lower taxes has earned a legal challenge in Denver District Court.

Advance Colorado Institute filed the lawsuit Monday challenging House Bill 21-1321, which added requirements to the language in a ballot measure’s title.

Other plaintiffs in the lawsuit include former U.S. Sen. Hank Brown, R-Denver, Logan County Commissioner Jerry Sonnenberg, Mesa County Commissioner Cody Davis, El Paso County Commissioner Carrie Geitner, and Englewood City Councilman Steven Ward. The plaintiffs are represented by former U.S. Attorney Troy Eid.

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