Allies of Venezuelan President Nicolas Maduro are disputing the election of eight opposition candidates to the National Assembly.

The opposition alliance this month won by a single seat the two-thirds majority in the legislature needed to rein in Maduro's socialist administration.

The Supreme Court on Tuesday said it has received motions by losing candidates to overturn the results in several districts. It didn't say on what grounds the challenges were made and nobody from the high court would comment.

The opposition is denouncing the move as an attempt to undermine its landslide victory. Maduro and his allies have been defiant in the face of defeat, with the lame-duck congress ramming through Supreme Court appointments and setting up in the legislature building a possibly parallel assembly comprised of grassroots activists.