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 | Clare Magee | Democratic | 1948.0 | Re-elected | Clare Magee (D) 54.4% Samuel W. Arnold (R) 45.6% |
| Missouri 2 | Morgan M. Moulder | Democratic | 1948.0 | Re-elected | Morgan M. Moulder (D) 53.0% Max Schwabe (R) 47.0% |
| Missouri 3 | Phil J. Welch | Democratic | 1948.0 | Re-elected | Phil J. Welch (D) 51.1% William C. Cole (R) 48.9% |
| Missouri 7 | Dewey Short | Republican | 1934.0 | Re-elected | Dewey Short (R) 58.7% Daniel J. Leary (D) 41.3% |
| Missouri 9 | Clarence Cannon | Democratic | 1922.0 | Re-elected | Clarence Cannon (D) 61.4% John H. Fahien (R) 38.6% |
Question:
How many were first elected when the incumbent was Morgan M. Moulder?
Answer:
1.0