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 |
| --- | --- | --- | --- | --- | --- |
| Illinois 3 | Fred E. Busbey | Republican | 1946.0 | Lost re-election Democratic gain | Neil J. Linehan (D) 52.9% Fred E. Busbey (R) 47.1% |
| Illinois 5 | Martin Gorski Redistricted from 4th | Democratic | 1942.0 | Re-elected | Martin Gorski (D) 72.4% John L. Waner (R) 27.6% |
| Illinois 14 | Chauncey W. Reed Redistricted from 11th | Republican | 1934.0 | Re-elected | Chauncey W. Reed (R) 68.3% Richard Plum (D) 31.7% |
| Illinois 15 | Noah M. Mason Redistricted from 12th | Republican | 1936.0 | Re-elected | Noah M. Mason (R) 56.4% G. M. Wells (D) 43.6% |
| Illinois 17 | Leslie C. Arends | Republican | 1934.0 | Re-elected | Leslie C. Arends (R) 62.8% Carl Vrooman (D) 37.2% |
| Illinois 18 | Everett Dirksen Redistricted from 16th | Republican | 1932.0 | Retired Republican hold | Harold H. Velde (R) 52.1% Dale E. Sutton (D) 47.9% |
| Illinois 20 | Sid Simpson | Republican | 1942.0 | Re-elected | Sid Simpson (R) 53.1% Henry D. Sullivan (D) 46.9% |
| Illinois 20 | Anton J. Johnson Redistricted from 14th | Republican | 1938.0 | Retired Republican loss | Sid Simpson (R) 53.1% Henry D. Sullivan (D) 46.9% |
| Illinois 26 | C. W. Bishop | Republican | 1940.0 | Re-elected | C. W. Bishop (R) 51.9% Kent E. Keller (D) 48.1% |
Question:
Who was the incumbent in the Illinois 17 district?
Answer:
Leslie C. Arends