Methodology handbooks can get very specific, so feel free to do a keyword search in Tripod for your topic + methodological approach (e.g. "health access survey design"). In general, some useful subject headings to look under:
Social Science -- Research -- Methodology
Political Science -- Methodology
Here are some recent Political Science handbooks:
Reference sources and scholarly books can provide a good overview of a topic. Look for literature review chapters and/or bibliographies that can point you to other books and articles that specifically address your research question.
This is not an exhaustive list. Search Tripod for <your topic> AND (companion OR handbook OR guide OR encyclopedia) to find more.