Sairki is a language born out of Punjabi and it doesnot mean to be Punjabi u cannot speak Sairiki or if u know a language sairiki, you r not Punjabi.
For centuires Punjabis are defined by five punj of rivers, and Sairiki South Punjab is part of being Punjabi.
Besides there is not much difference in Central Punjab and South Punjab, just because of a slight change in language does not at all mean u r no more Punjabi.
Second point, the recent election is completely valid and accepted except 4 seats which PTI wants recounting.
South Punjab voted for unity of one Punjab.