In the recent local elections in the UK one community in Wales had no candidate stand for election to the Powys council. It appears to be not uncommon for House races in the United States to be uncontested, but are there any examples of an election to a national legislature where no candidate ran?
In Algeria currently this problem exists in a way. The previous President who has reigned for many terms and is seen as being controlled by wealthy people and the military has finally stepped down from running for a 5th term as a result of huge protests. The problem is that no serious opposition parties or candidates exist because of years of political stiffling and suppression, that was the one excuse the group used to justify an attempt at a 5th term.