Another all-time low. This time it’s Zogby.

The national job approval rating of President Bush has plummeted to 30%, an all–time low in the latest Zogby International telephone poll, sinking below the 31% approval rating he dropped to in early June.

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Support for the President waned in key demographic groups, the Zogby poll shows. Among all Republicans, just 60% gave him a positive job rating, while 39% gave him negative marks. Just 9% of Democrats and 22% of political independents gave him good marks for his work. Among married respondents – typically a group who favors Republicans – just 35% said Bush was doing a positive job. Among men, another favorable GOP demographic, just 31% gave him positive marks, while 69% gave him a negative rating. Even among stalwart Born Again respondents, just 43% had positive ratings for the President on his overall job performance.