Matt Rourke and Abbie Parr/AP
- Donald Trump appeared to confuse Nikki Haley for Nancy Pelosi during a rally speech.
- Haley said the gaffe raises questions about whether Trump is "mentally fit" for office.
- The pair have ramped up attacks on each other ahead of the New Hampshire primary on Tuesday.
Republican presidential candidate Nikki Haley questioned whether Trump was "mentally fit" to serve as president after he confused her with Nancy Pelosi in a bizarre rally speech.
"We see that Biden has changed so much in two years," Haley said at a rally in Keene, New Hampshire on Saturday.