In 1951 R. A. Fisher described what had been achieved in the 20th century so far: “we have learnt (i) To conserve in its statistical reduction the scientific information latent in any body of observations. (ii) To conduct experimental and observational inquiries so as to maximise the...

In modern politics, the left-right divide has served as a political schema classifying ideologies that has allowed parties to communicate with voters and the latter to orient themselves in a complex political world. Although the left-right scale has been the most extensive instrument used to...

The proliferation of external campaign financing at the expense of party financing has been thought of as a driver of political polarization. Party leaders face an immense tradeoff financing non-incumbent races when the party is out of power: while they care about gaining control of the House,...

Embedding experiments within surveys has reinvigorated survey research. Several survey experiments are generally embedded within a survey, and analysts treat each of these experiments as self-contained. We investigate whether experiments are self-contained or if earlier treatments affect later...