Politicians are exposed to a constant flow of information about societal problems. However, they have limited resources and need to prioritize. So, which information should they pay attention to? Previous research identifies four types of information that may matter: public concern about a problem, problem attention by rival parties, news stories about problems, and statistical problem indicators. We are the first to contrast the four types of information through a field experiment with more than 6,000 candidates and multiple elite interviews in Denmark. The candidates received an email invitation to access a specially tailored report that randomly highlighted one of the four types of information. Statistical indicators and public opinion were accessed the most (26.9 per cent and 26.5 per cent of candidates in the two conditions). Our results provide new and important evidence about the types of information politicians consider when addressing societal problems.