House of Councillors Election 2010 - The Raw Numbers

Number of eligible voters (as of June 23, 2010): 104,513,907
Number of female voters: 53,977,415
Number of male voters: 50,536,492

Greatest voting disparity (ippyo no kakusa) between two districts = 5.01 times
in between Tottori Prefecture (487, 893 voters - 1 seat) and Kanagawa Prefecture (7,328,018 voters - 3 seats)

Number of candidates: 438
Number of seats available: 121
Number of district seat candidates: 251
Number of district seats available: 73
Number of proportional seat candidates: 187
Number of proportional seats available: 48

Number of candidates in previous elections:

377 (2007)
320 (2004)
497 (2001)
474 (1998)
567 (1995)
640 (1992)

Number of parties participating in the proportional half of the vote: 12
Number of candidates on proportional lists, by party:

Democratic Party of Japan (DPJ) 45
Liberal Democratic Party (LDP) 35
Your Party (Minna no To) 23
Japan Communist Party (JCP) 18
New Komeito 17
Sunrise Party (Tachiagare Nippon) 10
Women's Party 10
People's New Party (PNP) 7
Social Democratic Party (SDP) 6
Spirit of Japan Party (Nippon Soshinto) 6
New Renaissance (Shinto Kaikaku) 5

Minimum age for a candidate = 30 years of age

Number of female candidates: 100
By party (and out of...)

DPJ 27 out of 106
JCP 18 out of 64
LDP 14 out of 84
Your Party 8 out of 44
SDP 5 out of 14

Number of female candidates in previous elections

91 (2007)
68 (2004)
137 (2001)
110 (1998)
124 (1995)
123 (1992)