Hillary Clinton on Tuesday morning took a swipe at Donald Trump's performance at the first presidential debate.

"Anyone who complains about the microphone is not having a good night," Clinton told reporters aboard her plane.

The former secretary of state was referring to Trump's saying after Monday night's showdown at Hofstra University in New York that he had been given a "defective mic." The Republican presidential nominee went as far as to speculate to reporters that it may have been "on purpose."

Clinton on Trump: "Anyone who complains about the microphone is not having a good night" https://t.co/6OZtrfIwim https://t.co/lJRDrUHp00 — CNN Politics (@CNNPolitics) September 27, 2016

Clinton also responded to Trump's allusion to during the debate to Bill Clinton's sex scandals.

"He can run his campaign however he chooses," she said when asked about Trump floating the idea of injecting her personal life into the debate.

The Democratic presidential nominee said she felt "positive" about her debate performance.

A CNN/ORC instant poll showed she was seen to have won handily, with 62% of respondents saying she emerged victorious compared with 27% for Trump.