Markets fear that a Trump win could cause global economic and trade turmoil, after he threatened to rip up existing us trade agreements.
As at 6:50 am, the rand was down 4.25% against the dollar, at 13.74.
Global markets, which have favoured Clinton as a status quo candidate have also reacted negatively to the latest developments.
The currency was down about 5% against the pound and about 6 percent against the euro.
Meanwhile, the US dollar sank and stocks plummeted as mayhem came to world markets on Wednesday as investors faced the possibility of a shock win by Republican Donald Trump that could upend the global political order.
Every new TV network projection in the US presidential election showed the race to be far closer than anyone had thought, sending investors stampeding to safe-haven assets.
