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 |
| --- | --- | --- | --- | --- | --- |
| Virginia 1 | S. Otis Bland | Democratic | 1918.0 | Re-elected | S. Otis Bland (D) Unopposed |
| Virginia 2 | Joseph T. Deal | Democratic | 1920.0 | Re-elected | Joseph T. Deal (D) 65.4% L. S. Parsons (R) 34.6% |
| Virginia 3 | Andrew Jackson Montague | Democratic | 1912.0 | Re-elected | Andrew Jackson Montague (D) Unopposed |
| Virginia 4 | Patrick H. Drewry | Democratic | 1920.0 | Re-elected | Patrick H. Drewry (D) Unopposed |
| Virginia 5 | Joseph Whitehead | Democratic | 1924.0 | Re-elected | Joseph Whitehead (D) Unopposed |
| Virginia 6 | Clifton A. Woodrum | Democratic | 1922.0 | Re-elected | Clifton A. Woodrum (D) Unopposed |
| Virginia 8 | R. Walton Moore | Democratic | 1919.0 | Re-elected | R. Walton Moore (D) 95.5% J. W. Leedy (R) 4.5% |
| Virginia 9 | George C. Peery | Democratic | 1922.0 | Re-elected | George C. Peery (D) 53.4% S. R. Hurley (R) 46.6% |
Question:
What was the last year that incumbent joseph t. deal was first elected?
Answer:
1920.0