Via U.S. News:

Nationally-recognized election prognosticator Charlie Cook isn’t the only one who sees the majority for House Democrats slipping away. Today, House Majority Leader Steny Hoyer agreed, but said that he and others will mount a strong campaign to try and convince the public that better times are right around the corner.
In his recent analysis, Cook suggested a 30-40 seat lost in November for House Democrats, adding it could be worse if the current anti-incumbent and anti-Democrat trend continues. Republicans need to pick up 41 seats to take back the majority.
Asked about it at a media breakfast hosted by the Christian Science Monitor today, Hoyer says, “It’s an accurate view of what the polls reflect right now. Yes. I have great respect for Charlie Cook.”