Venezuelans will go to the polls on April 22. Incumbent Nicolas Maduro has suggested holding a "mega-election" that will prompt a snap legislative vote if approved by the constituent assembly.
"If the elections are extended to the National Assembly and other legislative bodies they might be put off until a later date, namely May," the source said.
The Venezuelan government unilaterally signed an agreement with the opposition after election dates discussion during the talks hosted by the Dominican Republic. Venezuela's Communications and Information Minister Jorge Rodriguez said later that after agreeing on all the points the opposition changed its stance because of "interference of other side."