Support and Opposition to Migration (SOM) is a collaborative project funded by the European Commission as part of the Seventh Framework Programme. The project looks at the politicization of migration in seven European countries. The aim of this comparative project is to determine why and when potential conflicts over migration become politicized, examining both anti-immigration and anti-racist movements. The project will increase knowledge about the political dynamics related to migration, and provide policy-relevant information. The project focuses on the role of four types of actors—the state, political parties, movements, and the media—in politicizing, or depoliticizing, the issue of immigration in seven receiving countries: Austria, Belgium, Britain, Ireland, the Netherlands, Spain, and Switzerland.