The Venezuelan government on Tuesday asked electoral authorities to declare illegal the opposition coalition seeking to oust President Nicolas Maduro via a recall vote, accusing them of committing massive fraud.

"We have just asked for the cancellation of the registration of the Democratic Unity Roundtable, for being involved in the worst vote fraud in the country's history," said Jorge Rodriguez, Maduro's designated aide to monitor the recall vote process.

Tuesday is the final day for the National Electoral Council (CNE) to rule on the validity of an initial batch of 200,000 signatures needed to move on to the next stage of the long and winding recall process.