Colorado requires statewide initiatives to obtain the signatures of 2% of the number of registered voters in each of the 35 State Senate districts. On August 21, the Tenth Circuit upheld that requirement. Semple v Griswold, 18-1123. Here is the decision.
The U.S. District Court had invalidated the law because it felt that “one person, one vote” principles require that the base should be the number of inhabitants. But the Tenth Circuit said that “one person, one vote” is not necessarily attached to the use of either population, or the number of registered voters; either is permitted.
The vote was 2-1. Thanks to Rick Hasen for the link.