Wildly entertaining and informative, Dave Leip's Atlas covers presidential, U.S. senatorial, and gubernatorial elections, polls, and predictions. Coverage varies by state for the senatorial and gubernatorial elections, but the presidential elections covers 1789–2012. It also includes an Electoral College calculator, which really shows how complicated this process is.
Alphabetical List of Resources
Produce comprehensive business and residential lists as well as detailed demographic reports. Assess business viability, perform market and site location analysis, create sales leads and/or marketing mailing lists, find potential sponsors and donors to grow a non-profit, prepare a small business plan and much more.
This site provides detailed information on not only the two main political parties, but the big three Third parties—Constitution, Green and Libertarian, and smaller Third parties such as the Prohibition Party, the Piraty Party and the Socialist Workers Party. It even covers "other parties" that have yet to endorse or field any candidate for office, such as the American Eagle Party and the Canary Party. Interesting stuff.