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 |
| --- | --- | --- | --- | --- | --- |
| Missouri 1 | Bill Clay | Democratic | 1968.0 | Re-elected | Bill Clay (D) 66.1% Robert J. Wittman (R) 33.9% |
| Missouri 2 | Robert A. Young | Democratic | 1976.0 | Lost re-election Republican gain | Jack Buechner (R) 51.9% Robert A. Young (D) 48.1% |
| Missouri 3 | Dick Gephardt | Democratic | 1976.0 | Re-elected | Dick Gephardt (D) 69.0% Roy Amelung (R) 31.0% |
| Missouri 4 | Ike Skelton | Democratic | 1976.0 | Re-elected | Ike Skelton (D) Unopposed |
| Missouri 7 | Gene Taylor | Republican | 1972.0 | Re-elected | Gene Taylor (R) 67.0% Ken Young (D) 33.0% |
Question:
Which candidates are from the Missouri 3 district?
Answer:
Dick Gephardt (D) 69.0% Roy Amelung (R) 31.0%