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 |
| --- | --- | --- | --- | --- | --- |
| Kansas 1 | William P. Lambertson | Republican | 1928.0 | Re-elected | William P. Lambertson (R) Unopposed |
| Kansas 3 | William H. Sproul | Republican | 1922.0 | Retired to run for U. S. Senate Republican hold | Harold C. McGugin (R) 52.7% Earl Knight (D) 47.3% |
| Kansas 4 | Homer Hoch | Republican | 1918.0 | Re-elected | Homer Hoch (R) 58.4% James E. Hilkey (D) 41.6% |
| Kansas 5 | James G. Strong | Republican | 1918.0 | Re-elected | James G. Strong (R) 53.9% Clyde Short (D) 46.1% |
| Kansas 6 | Charles I. Sparks | Republican | 1928.0 | Re-elected | Charles I. Sparks (R) 61.6% Robert Good (D) 38.4% |
Question:
 how many first elected with district is kansas 3
Answer:
1.0