This study challenges the view that self-interest is a minor force shaping public opinion. Using nationally representative survey data, it examines how financial stakes affect views on opioid treatment policies. A majority of Americans prefer funding for treatment programs through redistribution rather than local tax burdens based on overdose rates.

Experimental findings reveal that lower-income Republicans experience significant cross-pressuring from both partisan and financial self-interest regarding these policies. This interaction closes the partisan gap in support by more than half.

Furthermore, research shows spatial self-interest matters to everyone - regardless of political leaning - demonstrating how siting treatment clinics near homes reduces public support significantly.

These results highlight a crucial dynamic: even when policy outcomes are ideologically aligned with both parties, financial and spatial burdens can dramatically shape preferences.