Former 1992 Democratic presidential candidate Bob Kerrey says he will not make a decision this week on whether to run for the U.S. Senate seat he once held.

The former one-term Nebraska governor and two-term U.S. senator is mulling a run to replace U.S. Sen. Ben Nelson, who announced last month that he would not seek a third term. Both Democrats and Republicans have acknowledged that Kerrey is the Democrats' best hope for retaining the seat.

Kerrey had said earlier this month during a nearly weeklong trip to Nebraska that he would make a decision shortly after returning to New York, where he's lived and worked for the past decade. But more than a week later, he's still weighing his options.

Kerrey says he expects to decide sometime next week.