Possible Clues:

• One hoping to improve another's standing perhaps is known to have walked the wards
• Picture only half seen with right viewfinder?
• One soliciting votes
• Painting series half-finished for collector of views
• Party worker succeeded in painting Queen
• The public face of politics perhaps known to have walked the wards
• Door-to-door operator is able to upset savers
• Petitioner who seeks sales or votes
• Electioneer