That's true. But he does remain exceptionally stable in his ratings, which is what interests me from the side of the odds.
Here's an article (or the conclusion of it) I've just been reading from Gallup polls.
Bottom Line
Trump's job approval rating thus far in his presidency has been
extraordinarily stable, varying no more than six points from his term average of 40%. There has been some variation this year, with his approval rating
dipping to 37% for two polls in January when the government was shut down and stretching to
46% in April after the release of the Mueller report and positive economic news.
However, since then, Trump's approval has stabilized at just over 40%, raising questions about whether it has the capacity to fundamentally change. That's unlikely if it depends on Democrats softening their opposition to Trump or Republicans souring on him. Political independents may be the only means to move Trump's approval needle.
Meanwhile, a majority of Democrats are in agreement with such prominent party figures as Sen. Elizabeth Warren, Rep. Joe Kennedy, and Rep. Alexandria Ocasio-Cortez that the House should at least begin impeachment proceedings. But with political independents narrowly siding with Republicans in opposition to that action, public opinion currently leans against it.