變更

<ref>{{Cite web |url=http://cookpolitical.com/node/4201 |title=Introducing The Cook Political Report Partisan Voting Index (PVI) for the 111th Congress |accessdate=2016-01-04 |archive-date=2009-04-13 |archive-url=https://web.archive.org/web/20090413184820/http://www.cookpolitical.com/node/4201 |dead-url=no }}</ref>。2013 * 2013 年12月17日 ， : 他宣布不會尋求在2014年連任<ref>{{cite news|last=Livingston|first=Abby|title=Democrat Jim Matheson Announces Retirement|url=http://atr.rollcall.com/democrat-jim-matheson-announces-retirement/|newspaper=Roll Call|date=December 17, 2013|access-date=2016-01-04|archive-url=https://web.archive.org/web/20131219001755/http://atr.rollcall.com/democrat-jim-matheson-announces-retirement/|archive-date=2013-12-19|dead-url=yes}}</ref><ref>{{Cite web |url=http://cookpolitical.com/node/4201 |title=Introducing The Cook Political Report Partisan Voting Index (PVI) for the 111th Congress |accessdate=2016-01-04 |archive-date=2009-04-13 |archive-url=https://web.archive.org/web/20090413184820/http://www.cookpolitical.com/node/4201 |dead-url=no }}</ref>。