Mainly the candidate.
I don't think most voters are willing to be fiscally conservative.
I often think this is one of the biggest differences between average liberal voters and average conservative voters. What do you cut and what exceptions do you make? I have met some liberals who really want to balance the budget and agreed with me on that, but they want to make exceptions for everything to the point of failure. Their solution always came back to cutting defense spending. It often comes down to a disagreement on what govt should be doing or not doing. If you think govt should do everything, you will always spend too much money.