Scholars have documented the deficiencies in political knowledge among Amer
ican citizens. Another problem, misinformation, has received less attention
. People are misinformed when they confidently hold wrong beliefs. We prese
nt evidence of misinformation about welfare and show that this misinformati
on acts as an obstacle to educating the public with correct facts. Moreover
, widespread misinformation can lead to collective preferences that are far
different from those that would exist if people were correctly informed. T
he misinformation phenomenon has implications for two currently influential
scholarly literatures: the study of political heuristics and the study of
elite persuasion and issue framing.