Iron, coking coal, soybeans, salt and provided a majority stimulus to the japanese economy
I can think of one advantage: if this party wins, it will have a majority in the parliament and senate, so it will be have more power and would not have to negotiate every voting with the other party in the coalition.
In a multiple party when coalitions , the smaller party in the coalition usually gets proportionately much more power because it can "blackmail" the bigger partner; this often stalls the voting process.
Mate, the answer is <span>Grade inflation.</span>