From Vox:

Who really matters in our democracy — the general public, or wealthy elites? That’s the topic of a new study by political scientists Martin Gilens of Princeton and Benjamin Page of Northwestern. The study’s been getting lots of attention, because the authors conclude, basically, that the U.S. is a corrupt oligarchy where ordinary voters barely matter. Or as they put it, “economic elites and organized interest groups play a substantial part in affecting public policy, but the general public has little or no independent influence.”

Read an explainer of the study from Vox.

Read the full-text study from Princeton.