The conventional wisdom on Hillary Clinton turned in an instant.

But the evidence was hidden in plain view.

For many weeks now, it’s been clear that Hillary has had an awful campaign launch, that she has been submerged by an array of negative stories, and that her message has been underwater as well.

But when I’ve brought this up—on the air, in print, at social gatherings—what I’ve heard again and again is: It doesn’t matter. It’s not a problem. This is media-bubble stuff. She’s emerged unscathed. It’s not hurting her in the polls.

But now it is.

The pundit class is so poll-addicted that if something doesn’t show up in fav/unfav, or right track/wrong track, or cares-about-people-like-you, it didn’t happen. I know that journalists were just as aware as I was that Hillary has been hammered since the day her listening tour began. But most of them couldn’t believe their own eyes because, well, it wasn’t there in the data.

Of course, polls can be a lagging indicator, and the barrage had to be chipping away at Clinton’s image—especially among independents. And that’s exactly what happened.

In the CNN poll, 57 percent say she’s not honest and trustworthy, compared with 42 percent who say she is.

In the Washington Post/ABC poll, 52 percent say she’s not honest and trustworthy, compared with 41 percent who think she is.

Now polls bounce around, of course, but those are troubling numbers.

They show the combined impact of the private emails scandal, the ethical questions swirling around the Clinton Foundation, the six-figure speaking fees, and one more thing: the constant avoidance of the press.

It’s not that people are up in arms about journalists getting stiffed. We aren’t very popular either.

But by barely responding to questions about the negative stories, she ceded the turf to all the damaging headlines. Her operation seemed antiseptic and orchestrated. And by having bland conversations with small groups of voters, Hillary made no competing news. She left a vacuum filled by all the financial and email stories.

Perhaps that will change after Hillary does her Roosevelt Island kickoff in New York next week. But impressions about trustworthiness are hard to change, especially with a figure as well known as Hillary Clinton.

There is some truth to the spin that Hillary was always going to slip in the polls when she descended from the lofty perch of secretary of State to the grubby reality of campaigning. But that doesn’t fully explain her slide on the honesty question in just the last couple of months.

Most political journalists are smart. They can see when a presidential candidate is struggling. And they don’t need the latest pollster’s survey to report what they’re seeing and hearing.

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Howard Kurtz is a Fox News analyst and the host of "MediaBuzz" (Sundays 11 a.m. and 5 p.m. ET). He is the author of five books and is based in Washington. Follow him at @HowardKurtz. Click here for more information on Howard Kurtz.