The publication of Liz Cheney’s new book “Oath and Honor: A Memoir and a Warning” has thrust her back into the national spotlight. Friendly interviews with liberal TV icons like Rachel Maddow and Stephen Colbert helped the book reach the top of bestseller lists. Such enthusiasm for the former GOP representative in Democratic and liberal circles is understandable — but it’s also a hazardous dynamic if Democrats want to retain the White House for another four years.

During her last term as Wyoming’s representative in the House, Cheney was an admirable truthteller as she excoriated Donald Trump with key facts and deft rhetoric. Her attacks on Trump as a dire threat to American democracy rang true. But the Democratic establishment’s embrace of Cheney could actually end up damaging the Biden campaign by reducing the turnout of voters who believe in the Democratic Party’s core precepts.

The current problem was foreshadowed in early January 2022, when Liz Cheney’s father Dick Cheney visited the House floor to mark the first anniversary of the Jan. 6 assault on the Capitol. While showing up to support his daughter’s brave anti-Trump stand, the former vice president was met with profuse accolades from top Democrats. House Speaker Nancy Pelosi went out of her way to ignore........

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