A court spokesman told AFP late yesterday that the hearing, which will give the country's electoral commission a chance to defend its handling of the first round of the elections on October 10, would not take place today as planned for procedural reasons.
Former international footballer George Weah and incumbent Vice-President Joseph Boakai face each other in the November 7 runoff.
Neither gained more than 50 percent of votes in the first round.
Boakai has backed a legal complaint lodged by the opposition Liberty Party alleging "massive fraud and irregularities", but has said he is still participating in the runoff.