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 |
| --- | --- | --- | --- | --- | --- |
| Georgia 1 | Ronald "Bo" Ginn | Democratic | 1972.0 | Re-elected | Ronald "Bo" Ginn (D) Unopposed |
| Georgia 3 | Jack Thomas Brinkley | Democratic | 1966.0 | Re-elected | Jack Thomas Brinkley (D) Unopposed |
| Georgia 5 | Wyche Fowler | Democratic | 1977.0 | Re-elected | Wyche Fowler (D) 74.0% F. William Dowda (R) 26.0% |
| Georgia 6 | Newt Gingrich | Republican | 1978.0 | Re-elected | Newt Gingrich (R) 59.1% Dock H. Davis (D) 40.9% |
| Georgia 8 | Billy Lee Evans | Democratic | 1976.0 | Re-elected | Billy Lee Evans (D) 74.6% Darwin Carter (R) 25.4% |
Question:
How many parties were for candidates newt gingrich (r) 59.1% dock h. davis (d) 40.9%?
Answer:
1.0