I agree, @utopia,
most Liberal voters would only be interested in economics.... they promote tax cuts for the rich and everyone else can starve, for all they care.
I know quite a few liberal voters... the ones I know all went to private schools and would like to see the divide between rich and poor just get wider. They tend to disapprove of immigration, too.
Personally, I would hate to see the Liberals get in and introduce a co-payment to Medicare. It means that pensioners would not be able to afford to go to the doctor's and so they will wait to they are at death's door before they seek medical attention. It would be a choice between eating dinner that night or getting medical attention, because they could not afford both. 
When they do finally present to a doctors office in dire need of help, they will be admitted to hospital and medicare will have to cover the bill for that! So it will cost every tax-payer more in the long run and our public hospital waiting lists will blow out, as all the beds will be taken up by sick pensioners.
We will wait eons for elective surgery and those on the waiting lists will chew up more of our health dollar with their constant visits to the doctor's office for more and more meds to tide them over.
I believe that the Liberals don't see the long term costs in trying to save a quick buck. Not to mention the astronomical human costs.