state.info: information about the American states needed for U.S. Congress
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.source
Various ICPSR codebooks. http://www.icpsr.umich.eduDetails
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).