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 |
| --- | --- | --- | --- | --- | --- |
| Florida 1 | J. Hardin Peterson | Democratic | 1932.0 | Re-elected | J. Hardin Peterson (D) Unopposed |
| Florida 2 | Robert A. Green | Democratic | 1932.0 | Ran in at-large district Democratic hold | Emory H. Price (D) Unopposed |
| Florida 3 | Robert L. F. Sikes | Democratic | 1940.0 | Re-elected | Robert L. F. Sikes (D) Unopposed |
| Florida 4 | Pat Cannon | Democratic | 1938.0 | Re-elected | Pat Cannon (D) 81.4% Bert Leigh Acker (R) 18.6% |
| Florida 5 | Joe Hendricks | Democratic | 1936.0 | Re-elected | Joe Hendricks (D) 70.9% Emory Akerman (R) 29.1% |
Question:
How many districts have an incumbent first elected in 1940?
Answer:
1.0