Canvass (verb): A personal solicitation of votes or survey of public opinion. (वोट माांगना, परखना)
Synonyms: Campaign, Solicit, Survey, Investigate, Electioneer
Example: She’s canvassing for the Green Party.
Related: Canvassed, Canvassed

Uses:

During the campaigns virtually every constituency turns into its own bull ring, as party cadres treat rival banners like a matador’s red cape. With polls slated for December 30, the first two weeks of canvassing have already seen eight deaths and dozens injured. Given our historic standards, though, these numbers are still pretty low.