With a net gain to date of 61 seats, 3 more defeats of Democrat incumbents look possible.
Bloomberg.com reports similarly here:
“It’s expected that Republicans will hold on and pick up a total of 63 or 64 seats, though recounts can occasionally produce a surprise,” said Larry Sabato, director of the University of Virginia’s Center for Politics.
Vote totals taken from PoliticsDaily.com show Republican Vidak overturning Democrat Costa in CA-20 50.8% to 49.2%.
In IL-8, the Republican Walsh looks to overtake Democrat Melissa Bean 48.5% to 48.3% thanks to Green Party Scheurer siphoning off 3.2% on the Democrat incumbent's left. This was conservative Republican Phil Crane's old seat.
And in NY-25 the Republican Buerkle has a similarly razor thin lead over incumbent Democrat Maffei 50.2% to 49.8%.
Other races don't look as promising for Republicans, close as they are.
A constitutionalist third party candidate in CA-11 has managed 5% of the vote in a race leaning to the incumbent Democrat McNerney over the Republican Harmer by just .3%.
Incumbent Democrat Chandler in KY-6 has a .2% lead over Republican challenger Barr.
Three third parties in VA-11 have bled off 1.8% of the vote in favor of the Democrat incumbent Connolly vs. Republican Fimian who trails by .4% of the vote. Libertarian and Green parties strike again.
WA-2 is a different matter with 95% of the precincts reporting because of voting by mail. The Democrat Larsen is ahead of Republican Koster 50.7% to 49.3%.
The race in NY-1 has looked like Democrat incumbent Bishop's over Republican Altshuler 51% to 49% until the report of a closer count in the Bloomberg story. The Republican says many absentee ballots have not yet been counted.