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PTI, JI cruise to seven Senate berths; opposition left to ponder missed opportunities .
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PTI chief scuppers a fledgling alliance between ruling, opposition parties
Claims his membership of the K-P Assembly should be terminated.
Javed Nasim issued notice after seconding Senate hopefuls.
Deal yet to be brokered among the five parties as fourth meeting goes by.
Three meetings yield no outcome, alliance likely to offload PPP.
PML-N claims all parties willing to talk, more meetings likely.
Both treasury and opposition continue to remain absent or tardy at sessions .
Sirajul Haq retracts remarks on horse-trading, says MPAs will set example in Senate polls.