One party = one result, divided government = multiple choices. When you host a one party government, it is constantly one conceivable result. No uncertainties, ands, or buts about it. What that one party says, goes regardless of the possibility that they are wrong and that choice winds up harming them and their nation. Regardless of the possibility that it is terrible for the general population of that country. With an divided government, there can be various results and that originates from various sentiments. They voice the alternatives, conclusions of others and the ones that they speak to and for the most part go to the choice that is best for their kin.