17 day campaign for House of Councillors election in Japan has started for 21st July 2013 vote

"The 17-day campaign period for the House of Councillors election, set for July 21, officially started Thursday (4th July 2013)"

Source: 

Upper house campaigning under way

Daily Yomiuri

July 5th, 2013

http://the-japan-news.com/news/article/0000357613