Looks like the GOP is on track to hold the Mississippi Senate—presently only three of the races are close, two of which are breaking for the GOP—if things hold, they should emerge on top 29 to 23—worst case scenario is 27 to 25, which would be holding steady.
At present, they are also on track to pick up the house for the first time since reconstruction—elected or leading in 63, which is one more than necessary. Results are still early for the house. (3 seats have no results in at all).
Mississippi update—At the moment two of the three close Senate races are breaking D—they still may go either way, but as it stands 28-24 R—a pickup of one.
In the house, pubs are elected or leading in 62, dems in 58, and 2 districts have reported nothing. 8 districts to watch 3, 24, 25 (pubs leading narrowly) 13, 43, and 45 (dems leading narrowly) and 2 and 12 (no precincts reporting yet.
http://www.clarionledger.com/misc/election/electionleg.html