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Party says protests will continue until fresh elections are held across Karachi.
Party says it will not end its dharna till the ECP orders re-elections in the entire constituency .
MQM begins sit-in protest, calls for re-polling in entire NA-250 not just 43 stations.
Vow to keep holding rallies until fresh elections are conducted in the city .
Police and Rangers stand ready with tear gas to disperse the crowd.
MQM chief warns protestors, establishment, ECP, politicians and media.
The party has managed to secure almost all seats it won in 2008.
Karachi has 20 NA seats, out of which elections for one were postponed because of the death a candidate.
Political parties accuse MQM of ‘taking over’ polls, several boycott elections while others demand re-polling.
Christian candidate says Imran Khan believes that everyone is equal.