|Saskatchewan electoral district|
|Provincial electoral district|
|Legislature||Legislative Assembly of Saskatchewan|
Weyburn-Big Muddy is a provincial electoral district for the Legislative Assembly of Saskatchewan, Canada. Located in southeastern Saskatchewan, the constituency was created through the Representation Act, 1994 (Saskatchewan) by combining most of the Weyburn district with part of Bengough-Milestone. The "Weyburn" riding was once represented by former CCF Premier, and federal NDP leader, Tommy Douglas.
The largest centre in the constituency is the city of Weyburn (pop. 9,433). Smaller communities in the district include the towns of Willow Bunch, Coronach, Ogema and Bengough; and the villages of Minton, Pangman and Mctaggart.
Members of the Legislative Assembly
|23rd||1995–1999||Judy Bradley||New Democrat|
|24th||1999–2003||Brenda Bakken||Saskatchewan Party|
|2006–2007||Dustin Duncan||Saskatchewan Party|
|Saskatchewan general election, 2016|
|New Democratic||Karen Wormsbecker||1,260||16.06||-6.06|
|Progressive Conservative||Glenn Pohl||131||1.66||+1.66|
|Total valid votes||7,845||100.0|
|Source: Elections Saskatchewan|
|New Democratic Party||Ken Kessler||1,517||22.12||-3.03|
|New Democratic Party||Sharon Elliott||2,060||25.15||+1.30|
|New Democratic Party||Sherry Leach||3,441||40.58||+4.99|
|New Democratic Party||Judy Bradley||3,118||35.59||-6.58|
|New Democratic Party||Judy Bradley||3,506||42.17||*|
|Prog. Conservative||Brenda Bakken||2,434||29.28||*|
In February 2006, the constituency's seat became vacant when the current member, Brenda Bakken Lackey (Saskatchewan Party) tendered her resignation. On May 19, 2006, Premier Calvert announced a by-election for the seat, to be held on June 19, 2006.
The candidates were:
- Graham Mickleborough raised on a family farm in the Rose Plain district of Saskatchewan, was the candidate running for the NDP. He lives and works in Weyburn as the government appointed CEO and President of Weyburn Regional College.
- Dustin Duncan, born and raised in Weyburn, was the Saskatchewan Party candidate. He resided in Regina and worked in the SP legislative caucus office prior to the by-election.
- Liberal leader David Karwacki who was raised in Saskatoon and was the Liberal Party candidate. David is an entrepreneur and founder of Star Produce Ltd.
The Saskatchewan Party won the constituency by a considerably wider margin than it had in the 2003 Saskatchewan general election, although the party only managed to increase its share of the vote by a modest four percentage points (this swing would be enough for a Saskatchewan Party majority if it were repeated provincewide in the next general election). The Liberal Party was able to gain more support than the NDP, although that may well have been due to the candidacy of their leader. 
Compared to typical Saskatchewan by-elections, voter turnout was high.
|New Democratic Party||Graham Mickleborough||1,745||23.86%||-16.72%|
Members of the Legislative Assembly
|1.||Robert Menzies Mitchell||1908–1919||Liberal|
|2.||Charles McGill Hamilton||1919–1929||Liberal|
|3.||Robert Sterritt Leslie||1929–1934||Progressive|
|4.||Hugh Elliott Eaglesham||1934–1938||Liberal|
|5.||George Levi Crane||1938–1944||Liberal|
|6.||Thomas Clement Douglas||1944–1961||CCF|
|7.||Junior Herbert Staveley||1961–1964||Liberal|
|8.||James Auburn Pepper||1964–1982||CCF/NDP|
|9.||Lorne Henry Hepworth||1982–1991||Prog. Cons.|
|10.||Ronald Joseph Wormsbecker||1991–1995||NDP|
|12.||Brenda Bakken||1999–2006||Saskatchewan Party|
|13.||Dustin Duncan||2006–present||Saskatchewan Party|
- "Register of Official Candidates by Constituency - March 19 - FINAL" (PDF). Elections Saskatchewan. 19 March 2016. Retrieved 23 March 2016.
- "2016 General Election Results". Elections Saskatchewan. 4 April 2016. Retrieved 7 November2016. Check date values in:
- Website of the Legislative Assembly of Saskatchewan
- Elections Saskatchewan: Official Results of the 2007 Provincial Election By Electoral Division
- Elections Saskatchewan - Official Results of the 2011 Provincial Election
- Saskatchewan Archives Board – Saskatchewan Election Results By Electoral Division