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Sanders' bill could make debt-free college the new 2016 litmus test for millennial voters. Lowering the cost of higher education was the single most important issue that would have increased turnout among Democrats in the 2014 elections, according to polling conducted by the Progressive Change Campaign Committee. An ideal bill, according to a paper by the PCCC and the think tank Demos, would feature federal aid to states to lower the cost of college tuition, need-based aid to qualified students and other cost-cutting efforts like standardizing transfer credits and eliminating physical textbooks.