Johannesburg - Reports that the ANC's approval rating in Gauteng's three metros stood below 50% was untrue, the party in the province said on Sunday.
"We remain confident... that we will not only retain our municipalities where we currently govern, but also reclaim Midvaal," ANC Gauteng spokesperson Motalatale Modiba said in a statement.
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"Our own accurate information, research and work we are doing on the ground tells us that we are going to overwhelmingly win Gauteng."
According to the Sunday Times, an internal report showed that the ANC's support in Johannesburg had dropped as low as 37%.
The ANC's provincial internal research department had reportedly presented the report to provincial leaders late last year.
It showed that the approval rating in Johannesburg, Tshwane and Ekurhuleni stood at below 50%.
But Modiba said the percentages alleged in the newspaper report were "simply untrue".
During the 2014 general elections, the ANC's support in Gauteng had dropped.
The ANC garnered 53.59% which was less than the 64.04% support it enjoyed in 2009. It was the party's worst provincial performance in 2014.
This year's local government elections, to be held on August 3, are set to be the fight for the metros. Opposition parties have vowed to take control of metros such as Johannesburg, Tshwane and Nelson Mandela Bay away from the ANC.