"Advocacy research consists of collating available evidence or producing new information to support a pre-determined policy position. Advocacy research is commonly carried out by pressure groups, lobby groups and interest groups (such as trade unions) and, occasionally, by political parties, journalists and academics - especially those working in the social policy field."
Catherine Hakim (2000). Research Design: Successful Designs for Social and Economic Research. pp. 8–9.
"It is difficult to criticize advocacy research without giving an impression of caring less about the problem under consideration than do those who are engaged in magnifying its size. But one may be deeply concerned about problems such as rape, child abuse, and homelessness yet still wish to see a rigorous and objective analysis of their dimensions. Advocacy research that uncovers a problem, measures it with reasonable accuracy, and brings it to public attention performs a valuable service by raising public consciousness. The current trend in advocacy research is to inflate problems and redefine them in line with the advocates’ ideological preferences. The few impose their definition of social ills on the many - seeking to incite moral panics. This type of advocacy research invites social policies that are likely to be neither effective nor fair."
Gilbert, N. (1997). Advocacy Research and Social Policy. Crime and Justice, 22, 101-148.
there doesn't seem to be anything here