Though the protesters numbered fewer than 100, the demonstration kept political tension high in Africa's most industrialised country.
"We are confident that we will meet all outstanding requirements."
Zambia's incumbent President Edgar Lungu will be sworn into office for a new five-year term on 13 September.
Rand 0.95 percent firmer at 14.3825 per dollar at 0640 GMT versus close of 14.5200 in New York on Friday.
Some political activists have approached the High Court to challenge the ban which they say is unconstitutional