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Former UK leader Tony Blair warns that 2nd term for Conservatives risks economic chaos

  • Former British Prime Minister Tony Blair speaks during a visit to the Hitachi factory in Newton Aycliffe, England, Tuesday April 7, 2015, warning of economic chaos should Prime Minister David Cameron’s Conservative Party win the next General Election.  Blair won three elections under the Labour Party banner in the past, and now enters the campaign trail for Labour before Britain goes to the polls in a General Election on May 7. (AP Photo/Owen Humphreys, PA) UNITED KINGDOM OUT - NO SALES - NO ARCHIVE

    Former British Prime Minister Tony Blair speaks during a visit to the Hitachi factory in Newton Aycliffe, England, Tuesday April 7, 2015, warning of economic chaos should Prime Minister David Cameron’s Conservative Party win the next General Election. Blair won three elections under the Labour Party banner in the past, and now enters the campaign trail for Labour before Britain goes to the polls in a General Election on May 7. (AP Photo/Owen Humphreys, PA) UNITED KINGDOM OUT - NO SALES - NO ARCHIVE  (The Associated Press)

  • Former British Prime Minister Tony Blair speaks during a visit to the Hitachi factory in his former constituency in Newton Aycliffe, England, Tuesday April 7, 2015, warning of economic chaos should Prime Minister David Cameron’s Conservative Party win the next General Election.  Blair won three elections under the Labour Party banner in the past, and now enters the campaign trail for Labour before Britain goes to the polls in a General Election on May 7. (AP Photo/Owen Humphreys, PA) UNITED KINGDOM OUT - NO SALES - NO ARCHIVE

    Former British Prime Minister Tony Blair speaks during a visit to the Hitachi factory in his former constituency in Newton Aycliffe, England, Tuesday April 7, 2015, warning of economic chaos should Prime Minister David Cameron’s Conservative Party win the next General Election. Blair won three elections under the Labour Party banner in the past, and now enters the campaign trail for Labour before Britain goes to the polls in a General Election on May 7. (AP Photo/Owen Humphreys, PA) UNITED KINGDOM OUT - NO SALES - NO ARCHIVE  (The Associated Press)

  • Former British Prime Minister Tony Blair speaks during a visit to the Hitachi factory in his former constituency in Newton Aycliffe, England, Tuesday April 7, 2015, warning of economic chaos should Prime Minister David Cameron’s Conservative Party win the next General Election.  Blair won three elections under the Labour Party banner in the past, and now enters the campaign trail for Labour before Britain goes to the polls in a General Election on May 7. (AP Photo/Owen Humphreys, PA) UNITED KINGDOM OUT - NO SALES - NO ARCHIVE

    Former British Prime Minister Tony Blair speaks during a visit to the Hitachi factory in his former constituency in Newton Aycliffe, England, Tuesday April 7, 2015, warning of economic chaos should Prime Minister David Cameron’s Conservative Party win the next General Election. Blair won three elections under the Labour Party banner in the past, and now enters the campaign trail for Labour before Britain goes to the polls in a General Election on May 7. (AP Photo/Owen Humphreys, PA) UNITED KINGDOM OUT - NO SALES - NO ARCHIVE  (The Associated Press)

Former British leader Tony Blair has warned of economic chaos should Prime Minister David Cameron's Conservative Party win the May 7 general election.

The ex-Labour leader is set to argue Tuesday that Cameron's efforts to appease the rightwing members of his party and to stamp out a challenge from the U.K. Independence Party is pushing Britain out of the European Union. Blair is warning that such an exit will create job insecurity and "leave a pall of unpredictability hanging over the British economy."

Blair's appearance in his former constituency of Sedgefield will be the first of a series of stops to promote Labour candidate Ed Miliband.

Though Blair won three elections, his legacy is tainted by intervention in Iraq. It is unclear whether voters will be moved by his warnings.