He made the argument for these reforms and others in his books 10 Steps to Repair American Democracy (2006), Fixing Elections: The Failure of America's Winner Take All Politics (2003) and Reflecting All of Us/Whose Vote Counts (2001, co-authored with Rob Richie).

He led the campaign for instant runoff voting (IRV) in San Francisco in 2002, which was the first victory for electoral system reform in the United States since the 1950s.

As director of the Political Reform Program at the New America Foundation, he led the effort to pass a landmark law in California to lower the voter registration age to 17.

[6] Hill also played a leading role in organizing a constitutional convention for California in 2009, which garnered widespread popular support but failed to qualify as a ballot initiative in 2010.

During the course of his research, his interests broadened when he became aware of many other trans-Atlantic differences between the United States and Europe in terms of health care, social benefits and supports for families, political economy, the design of corporations/economic democracy, energy and transportation, representative government and foreign policy.