Iranians are mourning the death of President Ebrahim Raisi who was killed in a helicopter crash.
Constitutional Court says 2021 contempt of court conviction disqualifies former president for May 29 election.
Partial results hand Abinader victory, showing approval for his tough policies on migration from neighbouring Haiti.
Lai’s election victory gave the DPP an unprecedented third term, but his room for manoeuvre is likely to be limited.