I think GOP is still going to win in Collin in 2024 no matter who the candidate is, but I think a MAGA candidate could make it very close, Trump only won by 4 pts here, but a generic republican like Cornyn won by 10 points in the same election. So, it all depends.
Trump = 1-2 points
DeSantis or someone more friendly = 5-7 points
Why would a trump type Republican not do well there? It’s not a very liberal type suburb
In eight years, it also swung from Romney +31 to Trump +17 to Trump +4. This is not Trump country at all.
And Trump lost ground in a lot of traditionally conservative suburban counties. Williamson, TN swung against him by 9 points. Waukesha, WI swung against him by 6. Hamilton, IN swung against him by 12.