In 2001 his change of political affiliation tipped the balance of power in the Senate
[DOC] [TLE] Liberal Senator Who Left the GOP Hailed By NBC As 'A Giant of ... [PAR] Aug 23, 2014 ... Jeffords knew and agonized that a political switch at this time in his ... NBC's 
Katie Couric introducing a December 17, 2001 Today show interview with 
Jeffords.