Good question WP CANVASSING does allow The talk page of one or more articles WikiProjects or other Wikipedia collaborations directly related to the topic under discussion so leaving a note there with a clear edit summary as the locus of previous discussion would immediately catch those who watchlisted it But that may be none As far as directly notifying there have been 3 geo RMs which are the 3 at Talk C Mau and a 4th on the capitalization of Province at Talk An Giang Province provided there s no picking and choosing that all 4 RMs which will have some duplicate participants anyway are notified it can t be seen as picking and choosing