Romney ahead in NC

[True Federalist (진정한 연방 주의자)]

While not probable, the following map shows two reasonable scenarios for it to come down to North Carolina.

Colorado is in grey because North Carolina would still be the deciding State under this map no matter if it goes Romney or Obama.  The only difference is that if Obama gets Colorado but loses North Carolina we get a 269-269 tie that Romney wins in the House and the outcome of the Senate races determines in Biden gets four more years or not (probably not, but not certainly not).

[True Federalist (진정한 연방 주의자)]

While not probable, the following map shows two reasonable scenarios for it to come down to North Carolina.

I actually find your map quite probable.

I could see this map happening.

I'll ask: Ohio and Wisconsin going Republican before North Carolina or perhaps Colorado?

Ohio easily.  Wisconsin, not likely, but it's possible.