I am willing to sell my house and move for this.
I propose the new capitals be Vancouver and Dallas, the epitomes of the nations.
I propose we give them CO, VA, and NM in exchange for AK, MI, and WI, to rationalize the map.
Oh I want true Balkanization, we're going for multiples, not this red/blue split.
Pacific Republic: Western WA, Western OR, CA, NV, HI, BC, YK, and AK (and potentially Baja). Yeah Alaska is a weird fit and it wouldn't be popular but it's either go with this or Alaska becomes logistically untenable to live in. Hate to leave Colorado and New Mexico out but exclaves are a no go, Utah is a non-starter and Arizona is unreliable. Could add NT (Northwest Territories) but the next one probably wants Arctic territory.
JesusfuckEHstan (it works Bronco): Eastern WA and OR, ID, MT, WY, CO, UT, NE, IA, ND, SD, AB, SK, and NT. Poor Colorado but maybe the good ones can migrate.
Greater Texas: TX, OK, NM, AZ, KS, AR, MO.
Great Lakes Union: MN, WI, IL, IN, MI, OH, ON, MB, and NU (someone has to take Nunavut). Hopefully, the blues can outweigh the reds.
Quebec: It's just Quebec (though you may have to fold Nunavik into Nunavut).
The Confederacy: WV, KY, TN, MS, LA, AL, GA, FL, NC, and SC. Yeah, no Virginia.
The United States (someone gets to be the successor state and it's these guys): VA, DE, PA, MD, NY, NJ, CT, MA, RI, NH, VT, ME, NB, NS, PE, and NF.