Increasing age is a problem, more so for some than for others.
You have insisted on being reelected because, having beat Trump once, you could do it again.
But your performance in the debate yesterday was deficient.
You lacked vigor and speed.
Your opponent, Trump, has aged differently. He came across as far more vital than you did.
Under different circumstances, we might say that a debate does not make a president, but yesterday was…