NA 55 bye elections Sheikh Rasheed is in the race

Incorrect, you guys had choice many times
1) When Zardari claimed that he was nominated incharge by BB's letter
2) PPP should not have nominated him for Presidency
3) Workers at large in PPP could've threatened of leaving PPP during election if Zardari took over.

But none'of them happened, which means PPP has accepted Zardari as their leader despite many of other available eligible leadership.