The 2005 Leftist Alliance was held in the aftermath of the 2005 general election and resulted in a victory for Jack Straw who won outright in the first round.

Leftist Alliance Leadership Election 2005
1994 ←
8th May 2005 - 24 September 2005
→ 2015

Nominee Jack Straw Gordon Brown John McDonnel
Party Template:Labour Party/meta/shortname Template:Labour Party/meta/shortname Template:Socialist Party/meta/shortname
Electoral vote 298 88 51

Nominee Ed Balls Yvonne Wilkinson
Party [[Cooperative Party|Template:Cooperative Party/meta/shortname]] [[Social Democratic Party|Template:Social Democratic Party/meta/shortname]]
Electoral vote 38 25

Leader of Leftist Alliance before election

Tony Blair
[[Labour Party|Template:Labour Party/meta/shortname]]

Leader of Leftist Alliance

Jack Straw
[[Labour Party|Template:Labour Party/meta/shortname]]