Library Research Guide.

Print - election returns by state for president, governor, general elections... REF JK1967 .A8

Print - statistics and information on state governments. REF JK2403 .B6, 1941-date.

Print - statistical information on local governments. REF JS344 .C5 A24, 1987-date.

Informative site with lots of stats & maps.

Free online version of a long standing print title. Many spreadsheets and documents, regularly updated, covering demographics of members of congress, elections, finance and more.