The election in 2000 took a long time because it was very close in one state that would make a difference.
The opposition in Venezuela for once was organized and unified. They put observers in most polling places, which is their right in Venezuela. They were still denied access in some of them.
All parties have a right to get the tally from each site prior to it being sent to the central committee. The opposition has presented the tally sheets to the press. The government has not.
The level of proof is incredible. It should not be necessary. And yet even with this in hand, people doubt because they like socialism.