(CNN) - In an election eve interview, Democratic National Committee Chairman and former Virginia Governor Tim Kaine remained upbeat about the Democrats' chances in what pollsters are predicting will be a tough midterm for the party that won big two years ago.
"We're seeing some of those tough predictions," Kaine told CNN anchor Wolf Blitzer in an interview on The Situation Room. But, Kaine said "We believe we'll hold on to both houses."
As for Republicans, Kaine said "They think they'll take both houses."
"Four months ago the Republicans were saying they were going to be winning both the Senate and the House. Now they seem to be backing away from their claims about the Senate. "
Kaine said that in early voting results, which he is watching "very closely," "We are seeing Democrats doing very, very well."
As for races he will be keeping an eye on, Kaine named the governor's race in Ohio where Democrat Ted Strickland is hoping to be reelected over his challenger, Republican John Kasich, and the Pennsylvania Senate race between Democrat Joe Sestak and Republican Pat Toomey as two to watch.
Asked whether a bad outcome for Dems in the midterm could spell a tough reelection for the president in 2012, Kaine said "I'm not particularly worried about it."
"The midterms are almost always tough for the party with the White House." Kaine said, adding, "I think he (President Obama) has the right attitude about it."