Why OROP Issue Was a Pre-poll Harakiri by BJP?

The government has no choice but to implement OROP. The question is from where will the finance minister draw the funds?

The One Rank One Pension (OROP) scheme that was hanging on the Finance Ministry for over five years, both the Congress-led UPA government and the BJP-led NDA government under Narendra Modi should own the responsibility for perpetuating it despite full knowledge that it was beyond mere political calculations involving a huge dent on the exchequer. […]