[3] The site and its underlying database were developed from a personal interest triggered by the Biographical Directory of the U.S. Congress, which was its original data source.

It now includes most high federal officials, ambassadors, all elected and some appointed statewide officeholders, and many mayors.

Politicians are listed alphabetically, by office held or sought, and by dates and locations of birth, residence, and death.

The names are sorted and indexed by surname, birthplace, positions held, demography, geography, religion, occupation, cause of death, and final resting place.

It reports their relation (at least by blood and marriage) with other politicians listed, their political party, and limited military history.