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 |
| --- | --- | --- | --- | --- | --- |
| Maryland 1 | Robert Bauman | Republican | 1973.0 | Re-elected | Robert Bauman (R) 53.0% Thomas J. Hatem (D) 47.0% |
| Maryland 2 | Clarence Long | Democratic | 1962.0 | Re-elected | Clarence Long (D) 77.1% John M. Seney (R) 22.9% |
| Maryland 4 | Marjorie Holt | Republican | 1972.0 | Re-elected | Marjorie Holt (R) 58.1% Fred L. Wineland (D) 41.9% |
| Maryland 6 | Goodloe Byron | Democratic | 1970.0 | Re-elected | Goodloe Byron (D) 73.7% Elton R. Wampler (R) 26.3% |
| Maryland 7 | Parren Mitchell | Democratic | 1970.0 | Re-elected | Parren Mitchell (D) Unopposed |
Question:
List all results where the voting district is Maryland 7.
Answer:
Re-elected