| Name: | canvassHowMail |
| Label: | How did anyone from party canvass? Mail or phone |
| Question: | How did they contact you? [By mail or phone] |
| Type: | Dummy |
| 2016 | General election | Data forthcoming | ||
| 2016 | General election | Data forthcoming | ||
| 2011 | General election | Data forthcoming |