This is a list of by-elections to the Parliament of Tuvalu since the First Parliament in 1977, with the names of the incumbent and victor. There are no political parties in Tuvalu, but some by-elections enhanced or reduced a government's parliamentary majority. Where seats changed between factions at the election, the result is highlighted: light grey for a pro-government gain, dark grey for an opposition gain.(See also: Politics of Tuvalu and Parliament of Tuvalu) The information for this article dates from 1997 onwards. Information on earlier by-elections is not presently available.