I'm sure one of the lib sites has run this analysis. I assume it would have worked in the GOP's favor, purely looking at the GOP edge in the House (and assuming there wasn't a significant amount of vote-splitting between the Presidential and House races).
That's also not a particularly relevant analysis. This plan is not being considered in all 50 states (can't speak for the 7 extra states of 0bamaland). It's only being considered in "swing" states or states that have recently tended to go D in Presidential elections, but where the GOP controls the state government. The GOP in Texas would never let this happen there, for example, nor would the Dems in California.
That, incidentally, is the biggest weakness of this plan. In politics, perception is reality. Enacting this plan only in states where it would benefit the GOP makes it easy for the Dems and the MSM (redundant, I know) to spin this as a transparently partisan move. It feeds right into the "rigging the electoral college" narrative the Dems and MSM are spinning. In states like WI, PA, VA, etc., where the electorate is relatively moderate and usually pretty evenly split, there will likely be some hesitation on the part of GOP governors to sign this type of legislation.
Just because you can do something, it doesn’t mean it’s wise to do so.
This could be a serious over-reach on the part of the GOP.
“The GOP in Texas would never let this happen there”
The GOP in Texas had better start contemplating this, because sooner or later (and it may not be that long), Texas’ demographics are going to change. When that happens, Texas will become “Tejas” — first becoming a “purple” (battleground) state, and finally it will “tip over” into the blue.
All one has to do is check the major hospitals in Texas to gain a perspective on where the demographics are going. By far, the majority of babies in Texas are being born to Hispanic women, and the fertility rate of Euro/Anglo women is dropping. What does this portend for the future? Who are all those Hispanic babies going to vote for, when they get to voting age?