LAUSR

How does the extension of party conflict to a foreign policy issue affect the ability of Americans to form an opinion about the issue? We test this using elite references and longitudinal public opinion data about the Israeli–Palestinian conflict, a salient foreign policy issue in the United States that is increasingly characterized by partisan divisions. Our findings demonstrate that since the turn of the 21st century, the availability and clarity of party cues have increased, as well as the share of Americans who hold an opinion about the issue. Applying regression models to individual-level data, we reveal that the extension of party conflict to this issue has made it easier for more Americans to form an opinion.