Why Trump is suddenly talking up Biden after months of slamming his cognitive capacity

CNN — After months lampooning President Joe Biden as a cognitively impaired “brain-dead zombie” who can’t finish a sentence or navigate off a stage, former President Donald Trump and his campaign are changing their tune days ahead of the critical debate of the election.

The commander in chief has suddenly morphed into a “worthy debater,” someone of considerable ability and a veteran political performer who is not to be underestimated, according to Trump and his lieutenants.

The game of pre-debate expectation-setting is often absurd – one aide to former President George W. Bush once claimed that John Kerry, his Democratic opponent in 2004, was a better debater than Roman rhetorician Cicero. But the Trump team’s shift is remarkable given their relentless assault on Biden’s faculties. And it hints at their possible concerns that they’ve set an unnecessarily low bar for the president’s performance ahead of Thursday’s clash hosted by CNN in Atlanta.