Newt was sent to the showers by the Clintons and they did it with ease.
He was effectively demonized. It's that failure that gave rise to compassionate conservatism, like it or not.
The Clintons had dirt on Newt.
That is why he was beaten by the Clintons and that is why he resigned.
Absolutely. Newt was a liability once the Clinton's played gutter politics, which made him focus on shoring his personal reputation instead of doing the job he was voted to do.