Turkey's Yes and No camps target undecided in referendum sprint

Turkey is going to vote in a referendum today which proposes a major transformation to the country's system of government.

Turkish President Recep Tayyip Erdogan speaking at a rally in Istanbul Source: AAP

Turkey's top politicians made a final effort on Saturday to sway undecided voters in a frenetic end to a bitterly-contested campaign in the referendum on expanding President Recep Tayyip Erdogan's powers.

Campaigning ends at 3pm GMT but both the 'Yes' and 'No' camps were squeezing in a flurry of rallies as the clock ticked down to today's landmark poll.

Analysts see the poll as a historic choice on the direction of the NATO member which will shape its future political system and determine relations with the West.