7. There may be a recess before the elections, but recess (for both Houses) is usually August.
So they continue as normal until the new Congress is sworn in. Thus the whole concept of the "Lame Duck" session. ie, outgoing congresspeople voting for legislation that the incoming congresspeople probably wouldn't vote for.
I'm a Huey Long Democrat. They've got a set of Republican waiters on one side and a set of Democratic waiters on the other side, but no matter which set of waiters brings you the dish, the legislative grub is all prepared in the same Wall Street kitchen. - 1932