In an earlier post on the midterm elections, I predicted that the Republicans would gain control of the House but not the Senate (although they would make it very close). My sense is that with a week to go before the election, nothing has occurred to alter this predictions. The Republicans will gain control of the House; the only question now is, "By how much?" The last data I saw, suggested that when the dust settled the Republicans would hold somewhere around 235-240 of the 435 seats (currently, the Democrats hold 255).
As far as control of the Senate goes, Republican control hinges largely on whether in California the Republican challenger, Carly Fiorina, can upset the incumbent Democrat Barbara Boxer, which at the moment seems unlikely. Regardless of the outcome, it looks like the Senate will have a new Majority Leader because the current one, Harry Reid (from Nevada), will probably lose his reelection bid. Who will take his place is hard to say -- Diane Feinstein, perhaps -- probably not, but it will be interesting to see what happens.
Just as interesting is whether Charlie Crist will catch Marco Rubio in the race for the Florida Senate seat (probably not) and whether Republican Lisa Murkowski (running as an independent) will beat the official Republican (and Tea Party) candidate Joe Miller (possibly).
As one of my friends likes to say, we will see what we will see...