1.   ...the only candidate who defeated an incumbent senator.

2.   He unseated an incumbent senator.

3.   And Hartley is one of several incumbent Democrat state senators considered vulnerable.

4.   A quicker departure would give Cornyn, as the incumbent senator, a boost in the November election.

5.   After her tea party, Haddock hopes to campaign against incumbent senators opposed to campaign finance reform.

6.   But Carnahan supporters said an incumbent senator has a natural advantage over any challenger because of the influence a senator holds and his connections in Washington.

7.   But Schiff, with the advantage of being an incumbent state senator, is considered a much more formidable opponent.

8.   Carnahan said she felt accepted by the new and the incumbent senators she met Tuesday.

9.   Chafee, however, pointed to recent Republican losses -- the five conservative incumbent senators who were beaten by Democrats last year -- and drew a different conclusion.

10.   Democrats knocked off two incumbent senators.