Never has an incumbent president with a record of progress and economic prosperity been dogged by so many challenges heading into the heart of election season. Even before the special council report aimed at his competence and age was released earlier this month, polling showed widespread doubts about President Biden’s age and effectiveness.

As the president finally steps into campaign mode, he can try to convince voters they are wrong, or he can focus his energy on the one issue that seems guaranteed to galvanize critical voters for him despite those doubts — abortion rights and access.

Since the overturning of Roe v. Wade, the Supreme Court's 1973 decision guaranteeing a federal right to abortion, no issue has been more consistently effective in turning out voters than abortion. That single issue has been responsible for Democratic victories in the most unlikely places, including Kentucky, Ohio, Kansas and Florida.

And it’s not just core Democratic voters who care about the issue. In every one of the state referendums on abortion, independent and moderate Republican voters have also stepped up to protect abortion rights. Young voters overwhelmingly support unfettered abortion access.

That’s exactly the coalition the president must win to secure a second term. What’s more, Democratic and........

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