Most western analysts linked the uncertainty to the stroke believed to have been suffered by the North's leader, Kim Jong-il, last August.
This weekend he emerged to cast his ballot in elections for the country's official parliament, in which he was a candidate.
Voting was expected to be unanimous. Only one candidate's name appeared on each ballot, and while it was theoretically possible to cross that candidate's name off, electors had to do so in a special booth, making clear they were dissenters.