The last two cycles have seen Democrats out-advertise Republicans on TV. But what has it actually gotten them in terms of votes?

The last two cycles have seen Democrats out-advertise Republicans on TV. But what has it actually gotten them in terms of votes? @Efranklinfowler and Michael Franz of @wesmediaproject dig into the data on the latest episode of #TheScienceOfPolitics https://t.co/136Q9r3ErF

— Niskanen Center (@NiskanenCenter) February 27, 2020