"Nope," he said, when asked by The Hill whether he had made his choice.

Bennet said he didn't know when he'd be making the decision, and when asked about how he saw himself fulfilling the role — a high-pressure position that requires tireless fundraising and recruiting Democrats to run for office — he declined to comment.

"I'm not talking about it today," he said.

The Colorado Democrat was offered the position and chatted with Reid about it on Monday, but has not been given a hard deadline to decide. He did decline the position when offered in 2010, but the senator had just completed a tough race and Democratic prospects looked slim going into the 2012 cycle.

For the next cycle, Democrats face a similarly steep challenge in keeping control of the upper chamber, as six of their party members will be running in red states and six will compete in swing states.

But Bennet's experience running in a swing state, as well as his ability to relate well to colleagues, could be an asset to the committee, sources say, as Democrats plan to place a large emphasis on recruitment, which boosted their efforts this past Election Day.