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 |
| --- | --- | --- | --- | --- | --- |
| California 4 | Robert L. Leggett | Democratic | 1962.0 | Re-elected | Robert L. Leggett (D) 50.2% Albert Dehr (R) 49.8% |
| California 14 | John J. McFall | Democratic | 1956.0 | Re-elected | John J. McFall (D) 72.5% Roger A. Blain (R) 27.5% |
| California 16 | Burt L. Talcott | Republican | 1962.0 | Lost re-election Democratic gain | Leon Panetta (D) 53.4% Burt L. Talcott (R) 46.6% |
| California 18 | William M. Ketchum | Republican | 1972.0 | Re-elected | William M. Ketchum (R) 64.2% Dean Close (D) 35.8% |
| California 26 | John H. Rousselot | Republican | 1970.0 | Re-elected | John H. Rousselot (R) 65.6% Bruce Latta (D) 34.4% |
| California 27 | Alphonzo E. Bell, Jr. | Republican | 1960.0 | Retired to run for U. S. Senate Republican hold | Bob Dornan (R) 54.7% Gary Familian (D) 45.3% |
| California 31 | Charles H. Wilson | Democratic | 1962.0 | Re-elected | Charles H. Wilson (D) Unopposed |
| California 33 | Del M. Clawson | Republican | 1963.0 | Re-elected | Del M. Clawson (R) 55.1% Ted Snyder (D) 44.9% |
| California 34 | Mark W. Hannaford | Democratic | 1974.0 | Re-elected | Mark W. Hannaford (D) 50.7% Dan Lungren (R) 49.3% |
| California 35 | James F. Lloyd | Democratic | 1974.0 | Re-elected | James F. Lloyd (D) 53.3% Louis Brutocao (R) 46.7% |
| California 40 | Andrew J. Hinshaw | Republican | 1972.0 | Lost renomination Republican hold | Robert Badham (R) 59.3% Vivian Hall (D) 40.7% |
| California 41 | Bob Wilson | Republican | 1952.0 | Re-elected | Bob Wilson (R) 57.7% King Golden, Jr. (D) 42.3% |
| California 42 | Lionel Van Deerlin | Democratic | 1962.0 | Re-elected | Lionel Van Deerlin (D) 76.0% Wes Marden (R) 24.0% |
Question:
What year was incumbent mark w. hannaford elected?
Answer:
1974.0