Portuguese political parties were wrapping up their campaigns on Lisbon's streets on Friday ahead of a general election on Sunday - the country's third early vote in as many years - that polls indicate is unlikely to yield a stable government.

Portugal is facing its third national elections in three years on Sunday, following the collapse of the center-right government of Luis Montenegro. The election campaign has focused on domestic issues rather than foreign policy,

Portugal's governing Democratic Alliance groups the centre-right Social Democratic Party (PSD) of caretaker Prime Minister Luis Montenegro and the conservative CDS-PP. Montenegro, 52, remains its candidate for the premiership.