There is no party of fiscal responsibility.
No one wants to fix the DoD. No one wants to fix SS. No one wants to fix Medicare. No one wants to fix the tax codes.
If anyone has a realistic plan to fix those four things, they might be fiscally responsible. Heck, even if they proposed to fix one. Just cut back on the three spending items and raise the one revenue item. Easy enough. But, no one would get elected if they said that.