Former RNC chairman: GOP can’t take anything for granted

(CNN) – Fresh polling shows Republicans have momentum going into Tuesday's midterm election. But a former Republican National Committee chairman says the GOP can't get ahead of itself.

"It's more likely than not Republicans will have a majority in the Senate after these elections. But it's not a certainty, never is in politics," said Haley Barbour, former Mississippi governor.

"People shouldn't take things for granted," Barbour said.

For more of our interview with former RNC chairman Haley Barbour, check out the video above.