Having delayed any vote on their ObamaCare repeal plan, the Better Care Reconciliation Act, until after the July 4 recess, Senate leaders better use that time to sell the bill to voters and their own nervous nellies.

Take the scary Congressional Budget Office estimate that 15 million people would “lose” their health insurance in the first year under the Senate bill. Read the fine print, and you learn that most of these are people (many of them younger and in good health) who will gladly cancel their insurance once they’re no longer legally required to buy it, and fined if they don’t.

Even better news, buried in the CBO scoring (or at least in most reporting on it): By 2020, premiums will be 30 percent less than under current law.

As for the conservative gripe that the bill retains too much of ObamaCare’s basic infrastructure: Sorry, guys, you don’t have the votes to pass a bill that fully obliterates it.

But the changes the bill does make are for the good — and that definitely includes the reform of Medicaid, the entitlement program that rapidly threatens to eat Americans out of house and home.

ObamaCare empowered a massive expansion of Medicaid far removed from its original concept of helping the ailing poor — to a level that taxpayers can’t contain. It now enrolls one in four Americans, with more growth ahead.

Yet the bill merely slows that growth. The nation is now spending nearly $400 billion a year on the program; over the coming decade, the bill would reduce the growth in outlays by a total of $772 billion.

But it does so by finally reforming Medicaid, a half-century after its birth, by replacing the old incentives for states to keep expanding it with ones that encourage innovation and efficiency.

The program was on track to disaster before ObamaCare made it worse. Republicans, having campaigned on reversing the downward spiral, can’t afford not to deliver.

Why not just wait until ObamaCare’s ongoing implosion grows undeniable? Because the damage will be worse by then, and Democrats still will escape most of the blame since Republicans have control.

Governing forces you to make tough choices — and doing nothing guarantees the voters’ wrath.