So will it actually be single race with a 25 1/2 month term, as opposed to what happened in TX-22 for the 2006 election?
No, there will be two separate elections. You can't have a regulard election for a House seat that covers more than the set two-year term.
Well, that's what I figured would happen normally, but Lunar's part about taking office in November rather than January made it confusing. That's not what happened in TX-22; of course there was that hilarious write-in issue.
That is what happened in TX, Sekula-Gibbs won the special which Lampson didn't bother to run in and held office from November to January 3rd. Then Lampson took over with the next term having won the regular election against Write-in Sekula-Gibbs.