If Carolina was a single state would it be treated as a swing state?

[Tekken_Guy]

If Carolina was a single state would it be treated as a swing state?

[Sumner 1868]

It would lean R and have voted Republican in every election 1980 onward.

[WalterWhite]

Yes
Sí
Oui
Jawohl
Да
Ja
Đúng

[Skill and Chance]

East and West Carolina would be the more interesting hypothetical.  East Carolina (including the entire coastline) would have a longstanding Dem lean that's gradually eroding, while West Carolina would be slowly drifting from Likely R to Lean R assuming it has Charlotte in it.

[GregTheGreat657]

It would probably be viewed as such by Dems, but Pubs would consider it a likely R state.

[President of the great nation of 🏳️‍⚧️]

In the same way Texas is, sure. I agree with Skill and Chance that East/West is the more interesting alternate Carolina division. East Carolina would be the ancestral Dem state, while West Carolina would be safe R and inching towards likely, and safer R without Charlotte.

[ListMan38]

Unicarolina state margins since 2004:

2004: Bush +14
2008: McCain +3
2012: Romney +5
2016: Trump +7
2020: Trump +4

Eh, perhaps

[progressive85]

Sounds like it would be similar to the Florida of today.  South Carolina is so Republican that it would move NC into the likely R column for sure.

[MarkD]

Unicarolina state margins since 2004:

2004: Bush +14
2008: McCain +3
2012: Romney +5
2016: Trump +7
2020: Trump +4

To be more precise:
             GOP votes   %           Dem votes   %           Others   %            Total votes       % margin
2000     2,417,100   56.29     1,823,253   42.46      53,626  1.25        4,293,979       13.83%
2004     2,899,140   56.64     2,187,548   42.74      32.049  0.63        5,118,737       13.90%
2008     3,163,370   50.76     3,005,100   48.22      63,288  1.02        6,231,758       2.54%
2012     3,342,040   51.66     3,044,332   47.06      83,118  1.28        6,469,490       4.60%
2016     3,518,020   51.40     3,044,689   44.48    281,882  4.12        6,844,591       6.92%
2020     4,143,878   51.55     3,775,833   46.97    118,422  1.47        8,038,133       4.58%
                                                                               Average of the last 4 elections       4.70%

Within 5 points; yes, I'd say that it should be treated as a swing state.
(Trivia: the number of votes that Al Gore got in 2000 compared to the number of votes Joe Biden got in 2020 more than doubled. NC always cast slightly more than twice as many votes as SC.)