It's not just CNN's poll. All polling shows Trump's approval rating dropping.

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.