Tur and Soboroff head west to Arizona and Montana to examine how big money impacts local elections in unprecedented ways and explore the potential effects it could have on undermining democracy. Tur and Soboroff speak with Democratic Sens. Kirsten Gillibrand and Michael Bennet, Republican Sens. Rand Paul and Lindsey Graham, Gov. Steve Bullock and Tom Steyer to get a first-hand understanding of how big corporations and lobbyists are influencing local politics across the country.

This episode of MSNBC's new documentary series "American Swamp" focuses on voting in the United States. Katy Tur and Jacob Soboroff travel to North Carolina to discuss voter fraud in a hotly contested congressional race.