Also, just found this. Under Campaign Management, it says specifically:

b) A party that has subscribed to this Code will not

• harass or obstruct journalists who are engaged in their professional activities, or disrupt, destroy, or frustrate the campaign efforts of any other party;
  
• prevent the distribution of handbills and leaflets, and the display of posters, of other parties and candidates;
  
• deface or destroy posters of other parties and candidates;
  prevent any other party from holding rallies, meetings, marches, or demonstrations;
  
• seek to prevent any person from attending the political rallies of another party;
  or
  
• encourage its supporters to do anything prohibited by this section or condone such actions.