Surname matching
The Statewide Database's Statement of Registration (SOR) i.e. REG, ABS, POLL VOTE, and VOTE files contain registration data that are broken down by ethnicity. These data are derived from matching surnames on voter registration cards to an ethnic surname list.
Asian surname matching - a paper containg information detailing the development of an asian surname matching list. (pdf)
Methodology - a few words of caution (doc)