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 | James William Trimble | Democratic | 1944.0 | Re-elected | James William Trimble (D) Unopposed |
| Arkansas 4 | Oren Harris | Democratic | 1940.0 | Re-elected | Oren Harris (D) Unopposed |
| Arkansas 5 | Dale Alford | Democratic | 1958.0 | Re-elected | Dale Alford (D) 82.7% L. J. Churchill (R) 17.3% |
Question:
When was Dale Alford first elected in the Arkansas 5 district? 
Answer:
1958.0