From Digby:
In a letter to Majority Leader Harry Reid (D-Nev.), [Senate Majority leader Mitch] McConnell urged Reid to adopt a more conciliatory tone and warned him that Republicans will unite against Democrats if he does not. The letter was signed by all 40 GOP senators and two Republican incumbents who are awaiting the results of elections in Georgia and Minnesota.
That would include moderates Olympia Snow and Susan Collins of Maine. The Republicans run a tight ship. With the likes of Joe Lieberman and Diane Feinstein in the mix, I doubt that the magical sixty vote marker is of any importance.