Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| District | Incumbent | Party | First elected | Result | Candidates |
| --- | --- | --- | --- | --- | --- |
| Tennessee 1 | Jimmy Quillen | Republican | 1962.0 | Re-elected | Jimmy Quillen (R) 80.2% Sidney S. Smith (D) 19.8% |
| Tennessee 3 | Marilyn Lloyd | Democratic | 1974.0 | Re-elected | Marilyn Lloyd (D) 57.4% Harold W. Coker (R) 42.6% |
| Tennessee 4 | Jim Cooper | Democratic | 1982.0 | Re-elected | Jim Cooper (D) Unopposed |
| Tennessee 5 | Bob Clement | Democratic | 1988.0 | Re-elected | Bob Clement (D) Unopposed |
| Tennessee 6 | Bart Gordon | Democratic | 1984.0 | Re-elected | Bart Gordon (D) 76.5% Wallace Embry (R) 23.5% |
Question:
How many candidates are listed all together for the incumbent named bob clement?
Answer:
1.0