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:
| City | Population | Registered voters | Democratic | Republican | D–R spread | Other | No party preference |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Campbell | 39108.0 | 53.4% | 45.3% | 23.8% | +21.5% | 7.3% | 26.2% |
| Cupertino | 57459.0 | 48.2% | 37.0% | 20.0% | +17.0% | 4.0% | 40.4% |
| Gilroy | 47808.0 | 42.7% | 48.5% | 25.2% | +23.3% | 6.8% | 22.1% |
| Los Altos | 28752.0 | 67.4% | 41.5% | 29.4% | +12.1% | 4.3% | 26.2% |
| Los Altos Hills | 7912.0 | 73.6% | 34.9% | 33.6% | +1.3% | 4.3% | 28.7% |
| Los Gatos | 29165.0 | 65.0% | 41.0% | 31.5% | +9.5% | 6.2% | 23.7% |
| Milpitas | 66038.0 | 40.4% | 42.5% | 19.2% | +23.3% | 5.3% | 35.0% |
| Monte Sereno | 3338.0 | 73.7% | 37.1% | 36.9% | +0.2% | 6.1% | 22.3% |
| Morgan Hill | 37278.0 | 52.6% | 40.9% | 32.0% | +8.9% | 6.9% | 23.0% |
| Mountain View | 73394.0 | 46.0% | 49.1% | 16.4% | +32.7% | 5.3% | 30.8% |
| Palo Alto | 63475.0 | 59.7% | 52.6% | 15.5% | +37.1% | 3.8% | 29.2% |
| San Jose | 939688.0 | 44.6% | 46.8% | 20.6% | +26.2% | 6.0% | 28.8% |
| Santa Clara | 114482.0 | 41.9% | 46.5% | 19.9% | +26.6% | 6.1% | 29.7% |
| Saratoga | 29781.0 | 66.8% | 34.2% | 31.5% | +2.7% | 3.9% | 31.8% |
Question:
What is the d-r spread if the no party preference is 31.8%?
Answer:
+2.7%