At first I thought: "there's no way the electoral college would be close enough to make playing for a state like Wyoming worth it." Then I looked at the map and immediately saw. Oh Trump wins PA, NC, FL, and AZ, he'd win by 2. So yeah, any red western state could swing it.
Wyoming would likely not be the target because it's deeeeep red. Even with only a voting population of 255k, Trump still won the state by 118k votes.
He won Alaska by 47k votes, though it's pricier to get people to move there.
PA - 44k
AZ - 91k
MT - 101k
SD - 110k
FL - 112k
WY - 118k
ND - 123k
Even if you found completely willing people that you could only really siphon off CA, IL, WA, NY, MA, NJ, and MD. You make a play at 2-3 of the states. You'd end up with I think a couple problems:
1. State governments would immediately start playing shenanigans.
2. The cost of moving a handful of people is maybe 10k each. The cost of moving 100k people is exponentially more.
You could try a half and half approach, moving some people out and some people in. But I would guess that the people most willing to move out would fall on the blue side of things. The red voters are the most entrenched people to their territory.
It's an interesting thought, but it's strategy that a team could play out over 10-20 years in order to capture more power (especially in the Senate). Not something that will win you 2020.