27 November 2011 Last updated at 02:11 GMT
Etienne Tshisekedi was blocked in at the airport by police for eight hoursTension is high in Kinshasa, the capital of the Democratic Republic of Congo, after violence at pre-election rallies left at least two people dead.
Supporters of President Joseph Kabila and the main opposition candidate, Etienne Tshisekedi, pelted each other with stones and police fired tear gas.
Final rallies were due to be held on Saturday ahead of Monday’s parliamentary and presidential vote.
But police banned them at the last minute after the violence.
“Because of the escalating violence seen in Kinshasa, all public demonstrations and other political meetings are cancelled this Saturday,” Governor Andre Kimbuta said. “This is for a better result of the electoral process.”
Mr Kabila and his two main rivals had been due to hold rallies within several hundred metres of each other, at the capital’s main stadium.
Ballots delayed
Mr Tshisekedi of the Union for Democracy and Social Progress (UDPS) defied the police ban, telling supporters: “We are going to Stade des Martyrs. That’s where I’m going to hold my rally.”
Tens of thousands of people had gathered at Kinshasa main airport to welcome him, the Associated Press reported.
However, his car was blocked by police, who parked a large armoured truck across the road hemming him in for eight hours.
Political supporters have come into close proximity in KinshasaHe told reporters: “I’ll call the population of Kinshasa to come here.
“We are not going to let a few injuries stop us fighting now.”
Police used tear gas to disperse crowds and a number of UDPS officials were reported to have been roughed up or arrested.
According to Reuters, who quoted a UN source, Mr Tshisekedi was eventually escorted to his home by the police.
The elections on Monday see 11 candidates running for president and more than 18,000 candidates for the 500-seat parliament.
It will be the second presidential poll since the 1998-2003 war.
However, there are concerns over the distribution of ballot papers, as some planes bound for the country’s regions have been unable to take off because of bad weather.
Mr Tshisekedi has also alleged that the head of the national election commission favoured Mr Kabila, and that “ghost” polling stations would be used to rig the result.
The last election, in 2006, was marred by weeks of street battles led by supporters of the losing candidate.
The BBC’s correspondent in Kinshasa, Will Ross, said whether it is peaceful or not this time will depend to a great extent on the behaviour of the candidates and whether the losers are willing to accept defeat.
The Democratic Republic of Congo covers 2,344,858 square km of land in the centre of Africa, making it the 12th largest country in the world.
