The by-election will be held to fill 18 vacant seats -- nine in the House of Representatives (Lower House), three in the House of Nationalities (Upper House) and six in state parliaments.
According to the UEC, the date for issuing forms to overseas voters to cast vote in advance is set between November 15 and December 15 and date for submission of names of candidates is between November 28 and December 7, Xinhua news agency reported.
Campaign period will be from January 30 to March 30 next year.
The vacant constituencies were produced when the country's general election was held on November 8 last year, there were some constituencies which failed to hold the polling.
Other parliamentary seats were left empty after parliament members were appointed as government cabinet ministers.
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