Question:

How does 'EVERY taxpayer' subsidize a political donation tax credit?

Especially when the current government runs deliberate bloated deficits during relatively steady economic times, there is a complex relationship between the responsibility of current and future taxpayers in relation to government tax revenues, and the very question of who owns the benefit of a tax deduction or tax credit plays into the analysis.  

For example, it is only when government spends too much that tax deductions or credits can be seen as a loss for the government that someone needs to subsidize.  Why is that assumption of overspending so deeply imbedded in Liberal analysis?