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 | Results | Candidates |
| --- | --- | --- | --- | --- | --- |
| Louisiana 1 | Bob Livingston | Republican | 1977.0 | Re-elected | Bob Livingston (R) (unopposed) |
| Louisiana 2 | William J. Jefferson | Democratic | 1990.0 | Re-elected | William J. Jefferson (D) 86% |
| Louisiana 3 | Billy Tauzin | Republican | 1980.0 | Re-elected | Billy Tauzin (R) (unopposed) |
| Louisiana 4 | Jim McCrery | Republican | 1988.0 | Re-elected | Jim McCrery (R) (unopposed) |
| Louisiana 5 | John Cooksey | Republican | 1996.0 | Re-elected | John Cooksey (R) (unopposed) |
| Louisiana 6 | Richard Baker | Republican | 1986.0 | Re-elected | Richard Baker (R) 51% Marjorie McKeithen (D) 49% |
Question:
How many candidates were elected first in 1980?
Answer:
1.0