What Greg said

On the Libs' options:

If Liberals allow the Harper budget to pass, they will hear forever, the words "Well, I am just following the budget that was passed with the help of the Liberal Party", whenever Harper is asked about anything to do with the state of the economy. Think about that for a while before abandoning the idea of a coalition. Either way your party is going to own the recession. You might as well be in the driver's seat instead of being tied up in the trunk.