When nearly 90 percent of the batch of House ratings changes are in your favor, it’s normally great news. But with a limited House playing field, Democrats need to win virtually all of the competitive seats, and some initial takeover targets look like they are slipping out of reach.

In the most recent set of ratings changes by The Rothenberg & Gonzales Political Report/Roll Call, seven races shift toward the Democrats. Takeover prospects improved in a couple of California districts (the 10th and 49th), a couple of districts with weakened GOP incumbents (Florida’s 7th and New Jersey’s 5th), and two suburban districts (Kansas’ 3rd and Pennsylvania’s 8th).

[Roll Call’s 2016 Election Guide: House]

There is no question House Republicans have vulnerabilities and will lose seats. But it’s still unlikely that Democrats will gain the 30 seats they need for a majority, even with Donald Trump’s volatility at the top of the ticket.

On a national level, the Democrats’ advantage on the generic ballot has narrowed to just a few points and short of what we’ve seen in previous wave elections. And at a district level, the polling results have been mixed, in part, because Trump isn’t uniformly unpopular across the country. He’s getting crushed in the suburbs but doing fine in rural areas. And Democrats need to win House races in a diverse set of districts for a majority.