A deputy leader (in Scottish English, sometimes depute leader) in the Westminster system is the second-in-command of a political party, behind the party leader. Deputy leaders often become Deputy prime minister when their parties are elected to government. The deputy leader may take on the role of the leader if the current leader is, for some reason, unable to perform their role as leader. For example, the deputy leader often takes the place of the party leader at question time sessions in their absence. They also often have other responsibilities of party management.
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Current Deputy leaders
Australia
Ted O'Brien, Deputy leader of the Liberal Party of Australia
Richard Marles, Deputy leader of the Australian Labor Party
Kevin Hogan, Deputy leader of the National Party of Australia
Mehreen Faruqi, Deputy leader of the Australian Greens
Canada
Vacant, Deputy leader of the Liberal Party of Canada
Mike Morrice, Deputy leader of the Green Party of Canada
Melissa Lantsman and Tim Uppal, Deputy leaders of the Conservative Party of Canada
Vacant, Deputy leader of the New Democratic Party
Sol Mamakwa, Deputy leader of the Ontario New Democratic Party
Ireland
Helen McEntee, Deputy leader of Fine Gael
Jack Chambers, Deputy leader of Fianna Fáil
Michelle O'Neill, Vice president of Sinn Féin
Cian O'Callaghan, Deputy leader of the Social Democrats
Róisín Garvey, Deputy leader of the Green Party
Gemma Brolly, Deputy leader of Aontú
New Zealand
Nicola Willis, Deputy leader of the National Party of New Zealand
Carmel Sepuloni, Deputy leader of the New Zealand Labour Party
Shane Jones, Deputy leader of New Zealand First
Brooke van Velden, Deputy leader of ACT New Zealand
United Kingdom
Lucy Powell, Deputy leader of the Labour Party
Daisy Cooper, Deputy leader of the Liberal Democrats
Richard Tice, Deputy Leader of Reform UK
Mothin Ali and Rachel Millward, Deputy leaders of the Green Party of England and Wales
Vacant since 2 November 2024, Conservative Party
Keith Brown, Depute leader of the Scottish National Party
Jackie Baillie, Deputy leader of the Scottish Labour Party
Wendy Chamberlain, Deputy leader of the Scottish Liberal Democrats
Carolyn Harris, Deputy leader of the Welsh Labour Party
Delyth Jewell, Deputy leader of Plaid Cymru
David Chadwick, Deputy leader of the Welsh Liberal Democrats
Phil Davies and Linda Rogers, Deputy leaders of the Wales Green Party
Michelle McIlveen, Deputy leader of the Democratic Unionist Party
Vacant, Deputy leader of the Social Democratic and Labour Party
Eóin Tennyson, Deputy leader of the Alliance Party of Northern Ireland
Lesley Veronica, Deputy leader of the Green Party in Northern Ireland