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:
| Poll source | Dates administered | Joe Miller (R) | Lisa Murkowski (R) write-in candidate * | Scott McAdams (D) |
| --- | --- | --- | --- | --- |
| Public Policy Polling | October 30–31, 2010 | 37% | 30% | 30% |
| CNN/Time/Opinion Research | October 15–19, 2010 | 37% | 37% | 23% |
| Public Policy Polling | October 9–10, 2010 | 35% | 33% | 26% |
| CNN/Time/Opinion Research | September 24–28, 2010 | 38% | 36% | 22% |
| Moore Research | September 23–27, 2010 | 43% | 18% | 28% |
Question:
When 30% is scott mcadams (d) percentage how many poll sources are there?
Answer:
1.0