harvard university professor of government stephen ansolabehere...o in turn relied on a data fiim called catalyst to supply statistical iiformation... such as the percentages of whhtes and minorities in texas who are registered to vote."i had [previously] conducted several studies using the catalist data [the rofessor testified] anda"aa&i found identified by catalist as black, white oo hispanic identified themselves in the race projected by catalist."e rosenberg says: "if there was a perception that catalist was cooking the books in any way, you know,,they would llse all their clients, right? i pean this is -- they're all about integrity."" perhaps; but a look at catalist's website shows they the firm says its mission is "to provide progressive organizations with the data and services needed to better identify, understand, and communicate withhthe people they need toopersuade and clients include every ajor power ppayer on the left, from the democratic house and &psenate campaign committees to emily's list and planned parenthood to the 2008 obama camp