FACTBOX - U.S. presidential candidates' ideas on economy

(Reuters) - Worries that a recession may be looming have prompted several of the candidates in the U.S. presidential race to unveil plans to give the economy a lift. Here are their ideas:

DEMOCRATIC U.S. SEN. HILLARY CLINTON

The New York Democrat has proposed a $70 billion (35.5 billion pounds) package to stave off a possible recession, including $40 billion in spending for heating assistance, an extension of unemployment insurance and investments in energy efficiency.

The other $30 billion would go toward helping low-income families hit by the mortgage crisis.

A second, $40 billion phase of the package would be triggered if the economy failed to respond. That would pay for tax rebates for low- and middle-income workers.

DEMOCRAT JOHN EDWARDS

The former Democratic senator from North Carolina has proposed a $25 billion job creation plan with the possibility of an additional $75 billion if there is more evidence the United States is entering a recession.

The plan calls for investing in clean energy infrastructure, increasing federal aid to help states avoid cutting programs that help families through hard times, reforming unemployment insurance and tackling housing crisis.

DEMOCRATIC U.S. SEN. BARACK OBAMA