Tham khảo Bầu_cử_sơ_bộ_tổng_thống_Hoa_Kỳ

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  • McGaughey, Bill. "On the Ballot in Louisiana". Minneapolis: Thistlerose Publications. ISBN 0-ngày 97 tháng 6 năm 5630.] A minor candidate's experiences campaigning in Louisiana's 2004 Democratic presidential primary.
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  • "Reid, labor aided Nevada with Demos", Arizona Daily Star, 24 tháng 7 năm 2006.
  • Sabato, Larry, Politics: America's Missing Constitutional Link Lưu trữ 2013-05-29 tại Wayback Machine, Virginia Quarterly Review, Summer 2006, 149-61.
  • Scala, Dante J. Stormy Weather: The New Hampshire Primary and Presidential Politics (2003)
  • Ware, Alan. The American Direct Primary: Party Institutionalization and Transformation in the North (2002), a British perspective