We estimate 3% of the U.S. voter population is registered to vote in two states. Which state these double-registrants choose to vote in reflects incentives and costs, being more prevalent in swing states (higher incentive) and states which automatically send out mail-in ballots (lower cost). We...

We document political sentiment effects on inventors in the US. Democrat patenters are more likely to patent (relative to Republicans) after the election of Barack Obama but less likely to patent following the election of Donald Trump. These effects are 2-3 times as strong among active partisans...

Republicans start more firms than Democrats. In a sample of 40 million party-identified Americans between 2005 and 2017, we find that 6% of Republicans and 4% of Democrats become entrepreneurs. This partisan entrepreneurship gap is time-varying: Republicans increase their relative...