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 2 | James Trezvant | Jacksonian | 1825 | Re-elected | James Trezvant (J) 100% |
| Virginia 3 | William S. Archer | Jacksonian | 1820 (special) | Re-elected | William S. Archer (J) 100% |
| Virginia 4 | Mark Alexander | Jacksonian | 1819 | Re-elected | Mark Alexander (J) 100% |
| Virginia 5 | George W. Crump | Jacksonian | 1826 ( special ) | Retired Jacksonian hold | John Randolph (J) 100% |
| Virginia 6 | Thomas Davenport | Jacksonian | 1825 | Re-elected | Thomas Davenport (J) 100% |
| Virginia 8 | Burwell Bassett | Jacksonian | 1805 1821 | Re-elected | Burwell Bassett (J) 100% |
| Virginia 9 | Andrew Stevenson | Jacksonian | 1821 | Re-elected | Andrew Stevenson (J) 100% |
| Virginia 10 | William C. Rives | Jacksonian | 1823 | Re-elected | William C. Rives (J) 100% |
| Virginia 11 | Robert Taylor | Adams | 1825 | Retired Jacksonian gain | Philip P. Barbour (J) 100% |
| Virginia 12 | Robert S. Garnett | Jacksonian | 1817 | Retired Jacksonian hold | John Roane (J) 100% |
| Virginia 14 | Charles F. Mercer | Adams | 1817 | Re-elected | Charles F. Mercer (A) 63.0% Robert Thompson 37.0% |
| Virginia 15 | John S. Barbour | Jacksonian | 1823 | Re-elected | John S. Barbour (J) 65.0% William E. Hunton 35.0% |
| Virginia 16 | William Armstrong | Adams | 1825 | Re-elected | William Armstrong (A) 78.0% John Peters 22.0% |
| Virginia 19 | William McCoy | Jacksonian | 1811 | Re-elected | William McCoy (J) |
| Virginia 20 | John Floyd | Jacksonian | 1817 | Re-elected | John Floyd (J) 87.2% Edward Watts 12.8% |
Question:
How many district has a candidate that was first elected on 1811?
Answer:
1.0