(CNN) President Donald Trump's approval rating in the latest CNN poll stands at just 36%. That's a 6-point drop from 42% last month.

Normally, I'd dismiss such a decline as statistical noise and want to see other polls before declaring that the President's standing among the public has diminished.

Here's the thing: CNN's poll is only the latest in a series of high-quality, live-interview polling over the last two weeks to show that Trump's approval rating is down. This dip could have a major impact on the midterms if it holds.

Eight high-quality polls have been completed over the two last weeks -- and every single one of them has Trump's approval falling.

In the latest average, Trump's approval rating is about 38% in eight polls from ABC News/Washington Post, CNN, Gallup, IBD/TIPP, the Kaiser Family Foundation, Quinnipiac University, Selzer & Co. and Suffolk University.

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