Updated list now says 29, and corrects an error.
Kent Conrad (D-North Dakota) was replaced by a Democrat, not a Republican.
The 29th is Ted Kauffman (D-Delaware), replaced by a Democrat.
But there's also Carl Levin (D-Michigan), replaced by a Democrat.
Likely loser Mary Landrieu (D-Louisiana), to be replaced by a Republican, not counted yet.
Three died while still in office; Robert Byrd (D-West Virginia), Daniel Inouye (D-Hawaii), Frank Lautenberg (D-New Jersey).
That accounts for 29; too bad for the primitives.