For the Dems the voter turnout during non Presidential years has been dismal. 2014 voter turnout was lowest since WWII. If the Dems strategy is only to make a splash every 4 years, then they are going to lose ground in state elections. This of course leads to more gerrymandering or control by that certain party. Plus again for ObamaCare if Obama wants it not to live on life support, you need Demo or states who want to support this measure.