CHARLOTTE - Former US President Bill Clinton will argue in his speech to the Democratic convention on Wednesday that President Barack Obama's re-election is critical to restoring a vibrant, job-generating economy.

Clinton, the party's most popular elder statesman, will highlight the second night of the convention with a speech designed to remind voters of the budget surpluses and job growth he led in the 1990s during his two terms in the White House.

Clinton rejected the criticism of Obama's economic leadership leveled by Republican challenger Mitt Romney and others at their convention last week in Tampa, Florida.

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