It's actually states like Ohio and Pennsylvania with Republican legislatures that are more likely to split in the next few years. The Republicans have noticed that they keep losing presidential elections because of states where they carry rural and some suburban regions but lose urban areas.
The Constitution says that states can split with the permission of their legislatures and the permission of both Houses of Congress. Simple majorities are all that is required and the measures apparently cannot be vetoed either by state governors or by the President. So a state like Ohio could split into two or three states, two of which would be safe Republican. So could Pennsylvania. So for that matter, a bunch of Southern States. Or Alaska. All that it would take now would be for the Republicans to take the Senate in 2014. Then a Republican controlled Senate could eliminate the filibuster so that state splitting measures could go through Congress. Doing so could transform a simple Republican majority in at least the Senate into a 2/3 majority. Possibly if the numbers worked out, in the House as well. And hold off the demographic shifts of the "browning" of America that threaten to given the Democrats a permanent Congressional majority by 2020. How about splitting Texas into 5 states, three of which are almost guaranteed to remain white and Republican for the foreseeable future? And not let the Democrats do the same thing in New York?
It's how the game is being played these days, unfortunately