This data set comes from Richard C. Fording (https://rcfording.com/state-ideology-data/) and used in Berry et al. (1998). The data set includes state ideology data (measured at the state/legislature and citizen levels), for each year between 1960 and 2018. These data will be updated as Fording updates the data. This data set enables inclusion of a variable measuring state-level policy adoption by year. As an example, the data set also include a variable measuring the ratification of the Equal Rights Amendment as depicted in Soule and King (2006).
Ideology_ERAA data frame with 300 observations and 5 variables.
| state | |
| state name | year |
| year measured | c_ideo |
| citizen ideology score | s_ideo |
| state level ideology score | era_status |
| measures the the event: adoption/ratification of the Equal Rights Amendment for a state in a given year. 0 equates to not ratified in state in that year, 1 equates to ratified in state in that year |