House GOP Whip Eric Cantor (Va.) is a prolific fundraiser, author and spokesman, and on Monday morning he sported a new hat: TV show guest host.

Though the telegenic No. 2 ranking House Republican appears regularly on news programs to answer questions, Cantor played the role of interviewer for two hours on CNBC's signature morning show "Squawk Box" from 7-9 a.m.

Former DNC Chairman Howard Dean and former Treasury Department administrator of the bank bailout program Neel Kashkari were among Cantor's guests.

Cantor spokesman Brad Dayspring said that several weeks ago, CNBC asked Cantor to fill in on Monday for host Carl Quintanilla, who is on assignment. Cantor, and full-time show hosts Becky Quick and Joe Kernan, questioned guests on the economy, taxes, markets and auto sales from the CNBC studios in New Jersey.

"I think that it's been predicted at this point that the poll numbers will tighten up," Cantor said during his appearance.

He also said that President Obama's poor approval ratings weighed the most on Democratic candidates.

"I do think that [Democtratic candidates] are pivoting now to send a signal to the Democratic, left-wing base," Cantor said, pointing to the increased money that's been spent in competitive House and Senate races.

Cantor also claimed a 13 percent advantage for the GOP among likely voters. Though he said this would also narrow, Cantor described it as an unprecedented advantage for the GOP in the last month of the campaign.

"'Squawk Box' brings Wall Street to Main Street and is a 'must see' for everyone from the professional trader to the casual investor," according to a description on the show's website.