No matter what happens tomorrow.
Here's a reality check. Yes, it is true that the party of the President historically loses seats in a mid-term election; no one believed - this time a year ago - that Republicans would be a shoo-in to take control of the House and a couple of upsets away from taking over the U.S. Senate.
In fact, because at the beginning of the cycle the GOP had more Senate seats to defend (18) than Democrats (15), the conventional wisdom was that Harry Reid would probably have a stronger hand than his 60-40 margin earlier in the 111th Congress.
As you may have heard me say before, United States Senators take their title "Senator," which has been handed down from the Romans, very seriously. If they thought they could get away with it, they would wear togas to work every day.
Senators are elected for six years. The 17th Amendment to the Constitution states:
The Senate of the United States shall be composed of two Senators from each State, elected by the people thereof, for six years; and each Senator shall have one vote.
I only point that out because you may have been absent the day Mr. Mirandi explained to his 11th grade social studies class that prior to the ratification of the 17th Amendment in 1913, U.S. Senators were "chosen by the Legislature" of each state, not by popular vote.
The realities of a six year term means that most Senators dutifully go home on most weekends for about their first year; then they go home about once a month for their second year; years three through five it's a couple of times a year; and then in year six they return to their every weekend routine as they run for re-election and hope the folks back home forget they hadn't seen them in a while.
Meanwhile, the in-state political team which the Senator had assembled to run (and win) in the first place has long-since drifted off to do other things on behalf of other people, and so the Senator is left with only a staff of professional fawners who daily whisper in the Senator's ear the career enhancing phrase: "You are the fairest in the land" from whom to draw political expertise.
On the other side; a sitting U.S. Senator often finds him- or herself running against a statewide office-holder like an Attorney General or Secretary of State; or against a sitting Member of Congress who has been going home every weekend since he was a freshman.