This is an interesting analysis, but it would be more interesting to look at the generalization of the trends, rather than the cherry-picked examples of "intere

This is an interesting analysis, but it would be more interesting to look at the generalization of the trends, rather than the cherry-picked examples of "interesting" policies. Specifically, take all US Supreme Court decisions that resulted in the invalidation of state legislature, and track what the trend looked like in terms of historical trends of states that conformed to the decision before the decision was made. Is anyone aware of any data sources that would have this information in some form? The complexity seems to be that if a law was struck down by a state in 1956, and the Supreme Court made a decision relative to that law in 1960, determining whether the law would have been struck down could be more subtle than a binary yes/no. But even having this data in a basic form, measuring state legislature activity leading up to a relevant federal court decision, could at least give an indication of how long issues take to gain some momentum. This ignores the other axes; like state judicial decisions being overridden or validated by the federal level, or other variants, but still would be very interesting.