We need +15 and even the lowest estimates have generally been +8-10, so this surprised me. It's a new posting on his website for Thursday. Sabato and co-writer David Wasserman argue Democrats "have thus far failed to establish a truly national narrative to frame the battles in each of their targeted districts within a single, compelling context."
They list the so-called Four Ts of the Battle for the House: Terrain, Top of the Ticket Influences, Treasuries of Campaigns and Traits of Candidates. Scroll low on this link for the "Dirty Thirty Competitive House Races."
http://www.centerforpolitics.org/crystalball/article.php?id=DNW2006062901"Just how perilously close are Republicans to losing their congressional majority in 2006? The way several independent observers and Democrats are talking and acting these days, you might guess the GOP's demise was all but a done deal.
Only last month, veteran bipartisan polling team Thom Riehle and Lance Tarrance concluded that Republicans were "on the road to losing their majority status" after finding that by a margin of 44 percent to 32 percent, registered voters nationwide preferred the generic Democratic candidate for Congress in their district to the generic Republican. In Texas Hold'em poker terms, Riehle and Tarrance argued then that "Republicans need some great flop cards, a lucky turn card and a killer river card if they have any hopes of avoiding an all-in disaster in November."
<snip>
"But a little more than four months out from the election, the Crystal Ball is not yet ready to view the GOP majority as a flimsy house of cards, nor in our estimation should Murtha fast-forward to helping Pelosi hand out committee gavels to the ranking members of his caucus. The Republican margin in the House of Representatives may be more tenuous this year than it has been in any election cycle since its inception in 1994, but a larger wave than currently exists must build in order to completely erode the GOP's 15-seat edge, and by no means has the party in power already been swept out to sea."
<snip>
"Looking at each of these four factors carefully will tell us much about whether Democratic chances of sweeping the House sweepstakes keep moving closer to 50 percent over the next few months. At least for now, the race-by-race rather than national dynamic of competitive congressional races points to a "micro-wave" rather than a "macro-wave" for Democrats, and the current heat level places the Crystal Ball's best House estimate in the area of a 6-8 seat Democratic gain."