The binding legal principles established are: (1) An interdict cannot be granted to prevent conduct that has already concluded - where postal voting has closed by operation of law, an application to interdict such voting cannot succeed as the essential requirement of apprehension of future harm cannot be met. (2) Knowledge by commanding officers that postal voting is taking place, as contemplated by Section 73(1) of the Electoral Act, does not constitute a violation of the constitutional requirement for secret voting under Section 155(1)(b) of the Constitution. (3) Allegations of violations of electoral rights must be supported by factual evidence from affected voters themselves; courts will not interfere with electoral processes based on hearsay, anonymous tip-offs, speculation, or unsubstantiated assertions. (4) The requirement for 'secret voting' under Section 75 of the Electoral Act and Section 155(1)(b) of the Constitution refers to the actual casting of the ballot being concealed, not to the fact that voting is occurring being unknown. (5) Political parties seeking to challenge electoral processes must provide concrete evidence of violations rather than relying on assumptions or presumptions.