Asked his thoughts about Tuesday's primaries and the implications for November, Gibbs said Wednesday he thought voters were expressing their frustration and "we'll see what that produces in November. I remain confident ... that on election night we'll retain control of both the House and the Senate."
In July, Gibbs was blasted by House Speaker Nancy Pelosi and other Democratic leaders for suggesting enough seats were in play that could lead to Republicans regaining control in the House.
He later backed off his comments, saying while seats were competitive, the election was about choices that were becoming clearer as Nov. 2 drew closer and that Democrats would retain control of the lower chamber.
Gibbs said he thought results in GOP primaries Tuesday -- especially Christine O'Donnell's upset of veteran congressman and GOP establishment-backed Mike Castle in Delaware's U.S. Senate race -- showed deep fissures in the Republican Party.
"I think last night showed that there is a very vociferous debate going on inside the Republican Party for the hearts and minds of Republican voters," he said.