Peru has matured politically. The powers of the executive branch, the president and cabinet, have as a check and balance, the congress. The congress ratifies treaties, authorizes government loans, and approves the government budget. I believe few Peruvians have any appetite to return to either military rule or the control that Fujimori exercised. This past decade has been the best for Peru and the people will not want to regress. So even if Humala becomes president, it is less likely that his party will also control congress. Therefore he will not always have his way and to wrest more powers from congress would also prove hugely unpopular.

A separate executive and legislative branch of government has some great advantages. The people of the USA have often and wisely handed the control of congress and the presidency to different parties.

Peru is one of the best South American countries to be invested in and I doubt it will change much regardless of the outcome of the election in June.