|45th Premier of South Australia
21 October 2011
|Preceded by||Mike Rann|
|Treasurer of South Australia|
21 January 2012 – 26 March 2014
|Preceded by||Jack Snelling|
|Succeeded by||Tom Koutsantonis|
|Member of the South Australian Parliament
9 February 2002
|Preceded by||Murray De Laine|
|Born||Jay Wilson Weatherill
3 April 1964 
Adelaide, South Australia
|Political party||Australian Labor Party|
|Relations||George Weatherill (father)|
Jay Wilson Weatherill (born 3 April 1964) is an Australian politician who is the 45th and current Premier of South Australia, serving since 21 October 2011. Weatherill has represented the House of Assembly seat of Cheltenham as a member of the Australian Labor Party since the 2002 election.
Weatherill attended Henley High School. He later studied at the University of Adelaide, graduating with degrees in law and economics. During his university days, he had a relationship with current federal senator and former cabinet minister Penny Wong.
In the early 1990s, he worked at the law firm Duncan Basheer with Patrick Conlon and Isobel Redmond. With fellow Adelaide lawyer Stephen Lieschke, he established industrial law firm Lieschke & Weatherill in 1995 where he practised law until his election to Parliament in 2002.
Prior to the 2002 state election he won Labor preselection for the electorate of Cheltenham, defeating incumbent Labor MP Murray De Laine. Weatherill, from the Labor Left faction, has held positions in the Labor government ministry since his election in 2002.
Following the 2010 state election, Weatherill, at the time the environment minister in Mike Rann's government, unsuccessfully challenged Kevin Foley for the position of deputy premier. Weatherill said the election day backlash against Labor made it evident that a fresh approach was needed; however he lost along factional lines.
In late July 2011, senior figures within Labor had indicated to Rann that the left and right factions had agreed to replace Rann with Weatherill as party leader. In early August 2011 Weatherill's attempts at contacting Rann on his trade mission to India had been met with silence leaving the party leadership in limbo until Rann's return to Australia. Weatherill refused to rule out challenging Rann in a caucus ballot if he did not stand down on his return to Australia. Weatherill was sworn in as the 45th Premier of South Australia on 21 October 2011.
During his first term as premier, Weatherill introduced a conscience vote for a Greens-initiated gay marriage bill in August 2012, following the announcement of Tasmania's planned changes. On 21 January 2013, Weatherill became Treasurer of South Australia and took other various portfolios following a cabinet reshuffle triggered by the resignation of two members of his ministry.
Following the 2014 state election, Weatherill Labor formed a minority government − giving Labor a record 16 years in government. The election resulted in a hung parliament with 23 seats for Labor and 22 for the Liberals. The balance of power rested with the two crossbench independents, Bob Such and Geoff Brock. Such did not indicate who he would support in a minority government before he went on medical leave for a brain tumour. With 24 seats required to govern, Brock subsequently supported Labor. The Liberals were reduced to 21 seats in May 2014 when Martin Hamilton-Smith became an independent and entered cabinet with Brock. Both Hamilton-Smith and Brock agreed to support the Labor government on confidence and supply while retaining the right to otherwise vote on conscience. It is the longest-serving state Labor government in South Australian history and is the second time that Labor has won four consecutive state elections in South Australia, the first occurred when Don Dunstan led Labor to four consecutive victories between 1970 and 1977. The last hung parliament occurred when Labor came to government in 2002. Labor achieved majority government when Nat Cook won the 2014 Fisher by-election by five votes from a 7.3 percent two-party swing which was triggered by the death of Such. Despite this, the Weatherill Labor government kept Brock and Hamilton-Smith in cabinet, giving the government a 26 to 21 parliamentary majority.
During his second term as premier, Weatherill joined with Liberal premiers and stated that he would lead a national campaign against the federal Abbott Government's 2014 federal budget. Hieu Van Le was announced on 26 June 2014 as the next Governor of South Australia to replace Kevin Scarce. The July to September 2014 Newspoll saw Labor leading the Liberals on the two-party-preferred vote for the first time since 2009.
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- "New faces as Weatherill takes reins in SA". ABC News. 24 October 2011.
- Crouch, Brad (14 August 2012). "Weatherill staunches Labor opposition to back gay marriage Bill". AdelaideNow.
- Martin, Sarah (21 January 2013). "SA Premier Jay Weatherill cites jobs growth as he assumes treasury portfolio". The Australian. Retrieved 21 January 2013.
- "Re-elected SA Labor Government gets down to business". ABC News (Australia). 27 March 2014.
- "Weatherill to lead national revolt". The Sydney Morning Herald. 14 May 2014.
- "Hieu Van Le to be next SA Governor, from war-torn Vietnam to vice-regal post". ABC News (Australia). 26 June 2014.
- "Newspoll: 51–49 to Labor in South Australia". Crikey. 29 September 2014.
- "SA Premier backs troubled Power". The Daily Telegraph (Australia). 6 August 2012.
|South Australian House of Assembly|
|New district||Member for Cheltenham
|Party political offices|
|Leader of the Australian Labor Party
|Premier of South Australia
|Treasurer of South Australia