Australia's opposition urged Prime Minister Malcolm Turnbull to resign, calling him the 'David Cameron of the southern hemisphere'.
Nur Otan, the ruling party of energy-rich Kazakhstan, secured a landslide victory in parliamentary elections.
Japanese public support for Prime Minister Shinzo Abe has dropped in the days since his ruling coalition rammed through legislation allowing the nation's troops to fight abroad.
Former Greek left-wing leader Alexis Tsipras has a slight lead over his conservative rivals in the country's cliffhanger vote.
Final polls before Sunday's key Greek election gave a slim lead to radical left former prime minister Alexis Tsipras over his conservative rival.
Billionaire Donald Trump has extended his lead over the Republican presidential field, while Democratic overall frontrunner Hillary Clinton now trails underdog Bernie Sanders in the key early voting state of Iowa.
The centre-left party of Italian premier Matteo Renzi faced battles in regional elections, exit polls showed, after balloting which is also seen as a measure of the fading fortunes of ex-leader Silvio Berlusconi.
Ireland waited Saturday to learn the outcome of a historic referendum on same-sex marriage, with crowds of anxiously optimistic "Yes" supporters expected at Dublin Castle to hear the result.
Hillary Clinton and Marco Rubio are early frontrunners to become the next president of the United States.
Israeli Prime Minister Benjamin Netanyahu's rightwing Likud party was neck-and-neck with the centre-left Zionist Union in general election.
AFP correspondents said, for elections to determine whether Israelis still want incumbent Benjamin Netanyahu as leader, or will seek change after six years.
Seventy-three percent of Americans expect to see a female president in their lifetime, even as men are expected to maintain their dominant role in business.
Almost half of British Jewish people fear they have no long-term future in Britain or Europe.
Poland's ex-communist social democrats tapped a political unknown with model good looks and a doctorate degree in history for the May presidential vote.
Top US diplomat John Kerry has urged Sri Lankan President Mahinda Rajapakse to ensure that Thursday's elections are peaceful and credible.
Croatia's atypical president Ivo Josipovic is running for re-election with an emphasis on the more conventional promise of restoring economic health to the European Union's newest member.
Prime Minister Shinzo Abe stepped up pressure on business leaders to hike wages as he embarked on a renewed push to reinvigorate Japan's economy.
Japan's ruling coalition headed by Prime Minister Shinzo Abe is set to sweep elections this weekend, retaining its unassailable two-thirds majority.
Italy has a rising star: Matteo Salvini, head of the Euro-sceptic Northern League, is scoring high in the polls as he bids to fill the political vacuum on the right left by Silvio Berlusconi.
Russia endorsed a crushing victory for Ukraine's pro-Moscow rebel leadership after controversial polls that the EU slammed as a "new obstacle" for peace.