. >> translator: the dpj stands on pass fis imbut-- pacisim but also mutt stand for the islands. >> reporter: and okada is running. >> translator: i would debate with prime minister abe with confidence. i would fight with confidence and want to restore the people's trust in the dpj. >> reporter: all three candidates know revival is important to contest the current coalition. the party was once successful in dominance claiming power in 2009. but the victory was short lived. the party lost its leadership after the abe coalition won the majority in the 2012 general election. >>> in last month's lower house election. the dpj managed to increase its number of seats but it still fell way short of a majority. analysts say the current power balance is one strong party and many weak ones. the dpj candidates vow to change it. they say they could adequately beat the opposition and form a united front in the diet. the election is based on 760 points. ordinary dpj members and supporters across japan will cast votes for more than 60% of the total. the remaining points are divided by the party's diet lawma