The information is provided by the Massachusetts Office of Campaign and Political Finance, and comes from the campaigns themselves. The database contains submissions from Jan. 1 to Oct. 21, 2009.

Note that because the information comes from many sources, addresses, occupations, and employers are listed inconsistently. For example, the occupation of "vice president" may also be listed as "VP", or "V. Pres." An employer such as Boston University may also be listed as "BU" or "Boston Univ."