"Zanu-PF are trying to employ the tool of delaying so that we continue to talk about talks until Christmas. We need to put a full- stop to negotiations," said Nelson Chamisa, an MDC spokesman, at a press briefing in Harare.
"We realise there is disenchantment among the people. The people would want to see finality to these issues." Chamisa added. "If the deadlock persists then our trajectory is to have free and fair elections."
Since the formation of a coalition government in February 2009, Tsvangirai has accused Mugabe of refusing to appoint MDC officials to senior government posts.
Elections are due in 2011.
South African President Jacob Zuma, who was appointed by the Southern African Development Community to mediate in Zimbabwe's talks, last week sent his team to Harare. But their intervention could not apparently break the impasse between Zanu-PF and MDC.
Tsvangirai is demanding that Roy Bennett, his choice for junior agriculture minister, be sworn in. But Mugabe has refused saying the white former farmer must first be cleared of the terrorism charges he is currently facing.
Last month Mugabe's party said it would not make any of the concessions MDC is calling for until it convinces the West to remove sanctions imposed on Mugabe and his allies in 2002 following allegations of electoral rigging and human rights abuses.
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