WASHINGTON (Reuters) - President Bush's approval rating slipped to a new low in the latest national survey with pollsters suggesting federal government intervention in the Terri Schiavo controversy may have been a factor along with growing concern about the economy.

The USA Today/CNN/Gallup survey released on Friday found 45 percent of the 1,001 adults surveyed Monday through Wednesday thought Bush was doing a good job, compared with 52 percent during three previous surveys in late February and early March.

The president's previous low since taking office in January 2001 was 46 percent in May 2004.