A new Public Policy Polling survey shows Sen. Amy Klobuchar (D-MN) "is overwhelmingly popular and would cruise to reelection at this point pretty much no matter who her Republican opponent was."
Key finding: Klobuchar's approval rating is 59% with only 29% of voters disapproving of her.
Klobuchar leads a quintet of hypothetical Republican challengers by margins ranging anywhere from 10 to 18 points. Her closest competitor is Gov. Tim Pawlenty (R), who she leads 53% to 43%.