Sharif has been at odds with the country's judiciary since the high court forced him from power a year ago.
The Punjab Chief Minister Shahbaz Sharif has said that the victory of Pakistan Muslim League-Nawaz's (PML-N) Candidate in Sargodha by-election is the victory of politics of service.
As many as 25 candidates contested for the four Senate seats from Fata.
The Pakistan Peoples Party (PPP) claims to have the support of eight senators from the Federally Administered Tribal Areas (FATA) for the coveted slot of chairman and deputy chairman of the Upper House of Parliament.
He claimed the PML-N lost in the Senate elections in Balochistan because of bad governance. The newly-elected senators are due to serve six-year terms.
With the party now in control of the senate, the PML-N could change the constitution to allow Sharif to run in this summer's general elections. The party hasn't spoken about amending the constitution but it has been at odds with the judiciary since the Supreme Court ousted Sharif from power.
Last month a Pakistan court removed Sharif as head of PML-N, while a number of candidates linked to the former prime minister were also disqualified from running under the party's name.
Sharif has alleged he is the victim of a conspiracy by Pakistan's deep state to damage civilian power.
PPP leaders meeting independent senators from FATA.
Under Pakistan's constitution a bill can not become law unless it is passed by both upper and lower houses of parliament.
The Election Commission of Pakistan (ECP) is expected to formally announce the results by tomorrow.