Description

Numeric codes and names of 50 states and the District of Columbia, required to parse Keith Poole and Howard Rosenthal's collections of U.S. Congressional roll calls.

Usage

Format

icpsr

integer, numeric code for state used by the Inter-university Consortium for Political and Social Research

state

character, name of state or Washington D.C.

year

numeric or NA, year of statehood

Details

The function readKH converts the integer ICPSR codes into strings, via a table lookup in this data frame. Another table lookup in state.abb provides the 2-letter abbreviation commonly used in identifying American legislators, e.g., KENNEDY, E (D-MA).

Source

Various ICPSR codebooks. http://www.icpsr.umich.edu

See Also

state