Last instance body dealing with electoral disputes

Singapore
The Presidential Election Act
Persons entitled to be present during nominationproceedings
Objections to nomination papers
12.
(6) If the Returning Officer disallows anyobjection, his decision shall be final and conclusive and shall not be calledin question in any court; but if he allows the objection, his decision shall besubject to reversal on an application under section 71.
Application for avoidance of election on certain grounds
71. The election of a candidate asPresident shall be declared to be void on an application made to an ElectionJudge on any of the following grounds which may be proved to the satisfactionof the Election Judge:
...
Source: