Elections were being held in nine countries around the world on Sunday. Here’s a look at what’s at stake:

ARGENTINA

Argentines waited into the night for results from Sunday’s presidential election, in which the two main contenders were a ruling party candidate who promised to continue with the policies of President Cristina Fernandez and an opposition leader who argued the South American nation needs an overhaul.

With no results released for the six-candidate race, opposition leaders said their internal polling indicated their candidate, Mauricio Macri, had gotten enough votes to force a runoff with Daniel Scioli, the chosen successor of Fernandez.

COLOMBIA

Former Bogota Mayor Enrique Penalosa won a tight race to regain his old job on Sunday, handing a stunning defeat to Colombia’s left that has governed the capital for the last 12 years.

Penalosa received 33 percent of the vote in mayoral and gubernatorial elections held nationwide, besting former Defense Minister Rafael Pardo, who secured 28.5 percent, and leftist candidate Clara Lopez, who finished third with 18 percent.

GUATEMALA

A TV comic took a commanding lead in early returns Sunday night for the presidential runoff election in Guatemala, where huge protests and widespread public anger over corruption helped oust the last government.

The Supreme Electoral Tribunal reported that with nearly 70 percent of polling stations reporting, Jimmy Morales had about 72 percent of the votes, compared with 28 percent for former first lady Sandra Torres.

The winner of Sunday’s vote will face immediate demands for reform.

HAITI

With more than 50 presidential candidates and no clear front-runner, a December runoff seems inevitable in the impoverished Caribbean nation. Results are not expected until November.

IVORY COAST

Incumbent President Alassane Ouattara is widely expected to prevail over a divided opposition and perhaps secure enough votes to avoid a runoff in the first presidential election since a disputed vote five years ago triggered violence that killed more than 3,000 people. Official results are expected within five days.

POLAND

Poland took a decisive turn to the right in its parliamentary election Sunday, tossing out the centrist party that had governed for eight years for a socially conservative and Euroskeptic party that wants to keep migrants out and spend more on Poland’s poor.

An exit poll showed the conservative Law and Justice party winning 39 percent of the vote, enough to govern alone without forming a coalition.

The ruling pro-European Civic Platform party received 23 percent of the vote.

REPUBLIC OF CONGO

A constitutional referendum is being held to decide if the country’s longtime president is eligible for a new term. Under current laws, 71-year-old President Denis Sassou N’Guesso is barred from seeking re-election when his second term expires next year. The referendum asks voters to change the constitution to scrap a two-term limit and 70-year-old age limit for candidates. Results could come by Friday.

TANZANIA

The ruling party candidate, John Magufuli, is battling a former prime minister, Edward Lowassa, who defected to the opposition earlier this year, in a presidential race many analysts say is too close to predict. Results are expected within three to four days.

UKRAINE

Elections for local councils and mayors are seen as a test of strength for President Petro Poroshenko’s government and the oligarchs accustomed to running regions of the country. Voting is not taking place in parts of eastern Ukraine controlled by Russia-backed rebels. Preliminary results are expected on Monday.

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