Are Labour party politicians anti-Semitic, and are Conservative party politicians Islamophobic? In this correspondence study we measure the responsiveness of elected local representatives in the United Kingdom to requests from putative constituents from minority religious groups. We send short email requests to 10,268 local government representatives from each of the main political parties, from stereotypically Islamic, Jewish, and Christian names. Response rates are six to seven percentage points lower to stereotypically Muslim or Jewish names. The two major political parties both show equal bias towards the two minority group names. Results suggest that the bias in response may be implicit. Bias is lower in more dense and diverse locations.