The Shagari government became viewed as corrupt by virtually all sectors of Nigerian society. In 1983, the inspectors of the state-owned Nigerian National Petroleum Corporation began to notice "the slow poisoning of the waters of this country".  In August 1983 Shagari and the NPN were returned to power in a landslide victory, with a majority of seats in the National Assembly and control of 12 state governments. But the elections were marred by violence, and allegations of widespread vote-rigging and electoral malfeasance led to legal battles over the results. There were also uncertainties, such as in the first republic, that political leaders may be unable to govern properly.