canvass
verb
uk/ˈkænvəs/ us [ T ]
to try to discover information or opinions by asking people:
The survey shows that half the companies canvassed felt that using corporate websites was more cost-effective than other recruitment methods.
[ I or T ] POLITICS
to try to get political support or votes, especially by visiting people's houses:
I canvassed with him and more than a month ago predicted he would win.