What penalties are envisioned for offences related to threat driven voter coercion?

Election Act 2013,Art 75 - 90.

http://aceproject.org/ero-en/regions/africa/SZ/swaziland-elections-act-2013/at_download/file

Art. 78

shall on conviction be liable to pay fine not exceeding tenthousand Emalangeni or imprisonment for a period not exceeding two years orboth.

See the law for details on the penalties