If GOP nominee Donald Trump carries Michigan along with North Carolina and Florida, "we're in for a very short night," former House Speaker Newt Gingrich said Tuesday morning.

"If Trump carries New Hampshire, it's game on," Gingrich told Fox News' "Fox & Friends" program. "At that point, if I were Hillary and her team, I will be very, very worried."

And moving south, North Carolina and Florida will prove vital for Trump, because if he carries those two, "we're really in for a long night unless, as the poll that came out this morning suggests, he carries Michigan, in which case we're in for a very short night because at that point it will be very clear that Donald Trump is the next president," Gingrich said.

Coming in from the East Coast, West Virginia will "clearly" go for Trump, and neighboring Pennsylvania may also go for him, even though Philadelphia will be hard to win "and historically has a lot of voter fraud," said Gingrich.

"Ohio is going to go for Trump clearly. So the east is going to be better for Trump than you would have thought six months ago."

There has been some confusion, though, because of poll numbers, said Gingrich. Hillary Clinton is carrying California by a big margin, but she may tie or be just barely ahead nationally.

"I'll be very curious whether it's actually this close or whether the momentum for Trump means that it was this close," said Gingrich. "You saw what happened with Reagan. He gain strength every single day up through Election Day."

Meanwhile, Gingrich, a staunch supporter of Trump's, said this may be the "clearest" election in his lifetime.

"Secretary Clinton represents the establishment, the whole system and she is the legitimate heir to Barack Obama," said Gingrich. "Donald Trump is the most outsider candidate to be nominated in my lifetime.

"You guys have known him a long time — if somebody had walked up to you and said he's going to beat 16 other guys, become the Republican nominee, and by election day, you are not going to know who is going to win, you would have thought they were crazy."