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 |
| --- | --- | --- | --- | --- | --- |
| Arkansas 1 | Ezekiel C. Gathings | Democratic | 1938.0 | Re-elected | Ezekiel C. Gathings (D) Unopposed |
| Arkansas 2 | Wilbur Mills | Democratic | 1938.0 | Re-elected | Wilbur Mills (D) Unopposed |
| Arkansas 3 | Clyde T. Ellis | Democratic | 1938.0 | Retired to run for U. S. Senate Democratic hold | J. William Fulbright (D) Unopposed |
| Arkansas 4 | William Fadjo Cravens | Democratic | 1939.0 | Re-elected | William Fadjo Cravens (D) Unopposed |
| Arkansas 5 | David D. Terry | Democratic | 1933.0 | Retired to run for U. S. Senate Democratic hold | Brooks Hays (D) Unopposed |
| Arkansas 6 | William F. Norrell | Democratic | 1938.0 | Re-elected | William F. Norrell (D) Unopposed |
Question:
How many candidates were in the election featuring brooks hays (d) unopposed?
Answer:
1.0