Wiretapped phone conversations, including illegal gold dealing, arms shipments and attempts to hide vast sums of money, are refuted as fake.
A growing number of people in Turkey no longer recognise Erdogan as the legitimate leader of their country and want the goverment to resign.
In the end though political pundits expect the AKP party to be re-elected. The opposition are still in the minority and many Turks recognise the current economic, social and political stability of their country. THat may be wavering but they have faced worse in the past.
Erdogan has said he will step down if he is defeated in the elections. The AKP has been in power since 2002.
After decades of unrest and attempted military coups, for some Erdogan remains the best alternative. But the elections, if fair, will be a true test of that asusmption.
According to DW "The Turkish leader has repeatedly stressed that a so-called "parallel state," controlled by the US-based Muslim cleric Fethullah Gulen, has had a hand in the deception. Gulen, a former ally of Erdogan, is said to have increased the number of his followers in Turkey in recent years, thereby considerably increasing his influence in the judiciary and police."