We test the relationship between historical immigration to the United States and political ideology today. We hypothesize that European immigrants brought with them their preferences for the welfare state, and that this had a long-lasting effect on the political ideology of US born individuals....

We test the relationship between historical immigration to the United States and political ideology today. We hypothesize that European immigrants brought with them their preferences for the welfare state, and that this had a long-lasting effect on the political ideology of US born individuals....

We study the long run effects of immigration on U.S. political ideology. We establish a new result: historical European immigration is associated with stronger preferences for redistribution and a more liberal ideology among Americans today. We hypothesize that European immigrants moving to the...

Since campaign contributions reveal the actor’s party leanings, they take place in a domain of social observation and are likely to be subject to social effects. We conducted a field experiment to identify some of these social effects. We sent letters to 92,000 contributors from all U.S....