Donald Trump is the preferred presidential candidate of moderate Republicans in New Hampshire and Massachusetts, as well as very conservative ones in Georgia and Alabama. He's racked up enough support across the board and leveraged a splintered field to win the vast majority of early primary and caucus states.
There's nothing necessarily significant about these eight states, beyond that they're the ones Trump won. Trump, too, has a loss, just like the 1980 nominee, Ronald Reagan. The reason it's worth noting, though, is simple:
All of these people ended up being the nominee.