Intervention (Hidden)
Our intervention is a simple request for information from a constituent to a local politician. We randomly vary the name of the emailer and one of two different email scripts. Each name is a stereotypical Jewish, Muslim, or Christian name. One of the scripts is a anodyne request, and the second explicitly indicates the religion of the emailer.
There are 20,712 local councillors in the UK. Most of these are from the three major political parties; the Conservatives (9,022), Labour (6,457), and the Liberal Democrats (1,874). Our sample contains 10,268 councillors - approximately half of the total in the country (see Table 2).