(CNN) President Donald Trump's job approval rating has been consistently low. Yet, he always had an ace in his back pocket: the economy. It's not that the economy would necessarily save Trump come 2020, but it gave him a shot.

Multiple polls released over the last two weeks showed Trump's economic approval rating tumbling. The most drastic of which was a CBS News poll , which showed Trump's economic approval rating dropping from 52% in its last poll to 44% now, while his economic disapproval rating rose from 41% to 52%. Fox News NBC News/Wall Street Journal and Quinnipiac University polls don't show as dramatic of declines, but when you average them all together it's clear Trump lost a lot of ground on the economy.

In the average of the CBS News, Fox News, NBC News and Quinnipiac polls, Trump's economic approval rating dropped from 51% in each pollster's previous survey to 48% now as his economic disapproval rating increased from 40% to 48% now.

All told, his net economic approval rating (approval rating - disapproval rating) has dropped 11 points It went from +11 to 0.

The main culprit of Trump's economic decline was probably the shutdown. Across different measurements, consumer sentiment on the economy as a whole declined during the shutdown . The Trump administration, itself, has admitted that the shutdown at least temporarily hurt the economy

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