Turkish Prime Minister Recep Tayyip Erdogan said he would consider holding a referendum on plans to redevelop an Istanbul park that have sparked nationwide protests.
Britain's Conservative Party will on Tuesday propose laws to force an in-out referendum on the country's membership of the European Union to be held by the end of 2017.
Poles will have to okay eurozone entry in a referendum, a senior minister said Wednesday, echoing the prime minister's recent endorsement of a public vote on joining the unpopular currency union.
Polls indicate that Bulgarians will on Sunday vote "yes" to a second nuclear power plant in a referendum, in a closely watched contest between the government and the opposition ahead of elections in July.
British Prime Minister David Cameron faces a frosty reception from the global elite at the annual Davos meeting on Thursday after his vow to hold a referendum on Britain's membership of the EU.
Egypt's opposition said on Sunday it will appeal a referendum seen as voting in a new constitution backed by ruling Islamists, and vowed to keep up a struggle that has spawned weeks of protests and instability.
Egyptians voted on Saturday in the final round of a referendum on a new constitution championed by President Mohamed Morsi and his Islamist allies against fierce protests from the secular-leaning opposition.
Egypt is bracing for rival protests in Cairo on Tuesday over a bitterly divisive referendum on a new constitution, prompting President Mohamed Morsi to order the army to help "preserve security".
Britain's prime minister and Scotland's first minister have fired the starting gun on a two-year campaign for the hearts and minds of Scottish voters ahead of an independence referendum to be held in 2014.
Cash-strapped Zimbabwe's electoral commission needs $104 million to organise a referendum on a new constitution that would pave way for a vote on a successor to the country's shaky coalition government.
Two-thirds of Swiss voters rejected a referendum Sunday to tighten a smoking ban, to the relief of hotels and restaurants, while two cantons split in a vote over keeping tax breaks for rich foreigners.