Former U.N. Ambassador and Republican presidential candidate Nikki Haley offered former President Donald Trump and the party some advice to keep their guard up as Democrats grapple with President Joe Biden‘s disastrous debate performance.

As Biden and Trump took the CNN studio stage on Thursday, it took only minutes for Democrats to start grumbling about how Biden might not be the right candidate. He repeatedly stumbled on his words and lost his train of thought, worrying viewers that his age was more of a concern than the White House had let on.