Sabato, the operator of a website called “Larry Sabato’s Crystal Ball,” not only correctly predicted that the Democrats would take control of the Senate. His projection for the new House—232 Democrats and 203 Republicans—is very close to what could be the final tally. (While many media organizations still show a few House races as undecided, MSNBC has projected that the final count for the new House will be 234-201.)
In order to test the prognostication skills of some of the leading political pundits, the PEJ looked at 10 pre-election predictions, most from notable campaign watchers. Seven of them came from a roster compiled by blogger Ed Fitzgerald and three were included in a set of predictions published in the Nov. 5 Washington Post.

Source: Ed Fitzgerald's Unfutz blog, The Washington Post
Depending on how a few tight races ultimately get resolved, some of the other pundits could get the House right as well. Morton Kondracke, executive editor of Roll Call, is still alive with a pick of 230-205. And Stuart Rothenberg, who produces a well-known political report, has a chance with his 233-202 estimate. Some students at Montgomery Blair High School matched Sabato's 232-203 pick. (But Kondracke, Rothenberg, and the students all missed the mark with their Senate predictions, still giving Sabato the edge.)
At the low end of estimates for Democratic pickups in the House were "Cook Political Report" author Charlie Cook, Bob Novak's "Evans-Novak" newsletter and a panel of GOP insiders selected by the National Journal.
Fitzgerald also averaged dozens of those predictions to come up with an overall pre-election stab at the voters’ intentions. Those final average tallies (50-50 in the Senate and 229– 206 in the House) proved to be more accurate than the picks made by groups of both Republican and Democratic insiders assembled by the National Journal. And they certainly reflected the overarching consensus that Nov. 7 was going to be a big day for the Democrats.