Enyinnaya Abaribe, senate minority leader, also led the protest.
The march took off from the PDP’s Legacy House in Maitama, Abuja amid tight security.
The protesters, who are in hundreds, held placards which read: “Save Judiciary”, “Presidency and Judiciary Murder Democracy” and “We say no to Supreme Court judgement in Imo” among others.
Security agents have cordoned off the road leading to the supreme court.
In March 2019, the Independent National Electoral Commission (INEC) declared Ihedioha as the winner of the election, but Uzodinma challenged the decision up to the supreme court.