Republicans tend to be more supportive of the oil drilling industry than Democrats are. The Democratic Party platform outlines a goal to reduce reliance on oil by instead encouraging the production and use of cleaner, renewable energy sources. In comparison, the Republican platform declares support for all sources of marketable energy, and explicitly cites oil as such a source. Polling concludes that Republican voters have far more favorable views of oil fracking than Democratic voters do, by a wide margin of 62% to 29%, respectively.