‘Motivated Reasoning, Public Opinion, and Presidential Approval‘, an interesting new paper forthcoming in the journal Political Behavior (summarized here), by Kathleen M. Donovan, Paul M. Kellstedt, Ellen M. Key, Matthew J. Lebo finds that support for sitting presidents has become increasingly misaligned with national economic expectations. Rather than being a sign of voters realizing that presidents play little role determining economic performance, they attribute this to increased partisan polarization.
I think this is a compelling account. All I would add is a potential causal mechanism. My current favorite dimensions for analyzing democratic trends in the developed world is demography. Voters are ageing. When retired, they tend to have much less direct involvement with the productive economy than when they were working. On average, the elderly are quite rich and living off entitlements they have acquired during their working lives. So they are both less reliant on current economic opportunities and less knowledgeable of them. This means their personal costs of partisanship, relative to good policy, is lower than it used to be. And this is what lets all the culture-war nonsense creep into people’s decision functions.