MONTEVIDEO, Uruguay (AP) — Uruguayans are stuck waiting for final results in a closer than expected presidential runoff election that has the candidate backed by a united opposition holding a razor-thin margin over the governing center-left bloc.

With all but a few thousand ballots counted by early Monday, Luis Lacalle Pou of the National Party maintained a nearly 30,000-vote edge over Daniel Martínez of the governing Broad Front coalition out of nearly 2.3 million votes.

José Arocena, head of Uruguay’s Electoral Court, said it could not yet declare a winner because "there was never such a tight ballot."

He added that it might be Thursday before final results were announced, leaving Uruguayans to wait to see if another electoral blow had been delivered to a left-leaning bloc in Latin America.