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  • People lines up to vote at a polling station in Tigre, outskirts of Buenos Aires, Argentina, Sunday Oct. 25, 2015. Argentines are weighing continuity versus a financial overhaul in Sunday's elections as they pick the successor to President Cristina Fernandez, a polarizing leader who dominated national politics for 12 years.(AP Photo/Enric Marti)

    People lines up to vote at a polling station in Tigre, outskirts of Buenos Aires, Argentina, Sunday Oct. 25, 2015. Argentines are weighing continuity versus a financial overhaul in Sunday's elections as they pick the successor to President Cristina Fernandez, a polarizing leader who dominated national politics for 12 years.(AP Photo/Enric Marti)  (The Associated Press)

  • A soldier talks to a polling station official as they prepare to open in Tigre, outskirts of Buenos Aires, Argentina, Sunday Oct. 25, 2015. Argentines are weighing continuity versus a financial overhaul in Sunday's elections as they pick the successor to President Cristina Fernandez, a polarizing leader who dominated national politics for 12 years.(AP Photo/Enric Marti)

    A soldier talks to a polling station official as they prepare to open in Tigre, outskirts of Buenos Aires, Argentina, Sunday Oct. 25, 2015. Argentines are weighing continuity versus a financial overhaul in Sunday's elections as they pick the successor to President Cristina Fernandez, a polarizing leader who dominated national politics for 12 years.(AP Photo/Enric Marti)  (The Associated Press)

  • Officials at a polling station prepare ballots for voting in Tigre, outskirts of Buenos Aires, Argentina, Sunday Oct. 25, 2015. Argentines are weighing continuity versus a financial overhaul in Sunday's elections as they pick the successor to President Cristina Fernandez, a polarizing leader who dominated national politics for 12 years.(AP Photo/Enric Marti)

    Officials at a polling station prepare ballots for voting in Tigre, outskirts of Buenos Aires, Argentina, Sunday Oct. 25, 2015. Argentines are weighing continuity versus a financial overhaul in Sunday's elections as they pick the successor to President Cristina Fernandez, a polarizing leader who dominated national politics for 12 years.(AP Photo/Enric Marti)  (The Associated Press)

The latest news as Argentina, Guatemala and Haiti hold votes for the presidency and Colombia for regional offices:

10:25 a.m.

Haitian voters have begun choosing between more than 50 presidential candidates, and the process generally has been orderly so far this morning.

There are some early signs of confusion, though.

At a voting center in Port-au-Prince's Martissant slum, an elections supervisor yelled at dozens of people trying to force their way in: "No voting two times!"

People shouted back that they were being prevented from voting once.

At a polling center in the Petionville neighborhood of Port-au-Prince, police gave the unruliest people in line short zaps with a Taser as brief scuffles broke out.

Results aren't expected before late November. And with so many candidates, a Dec. 27 runoff between the top two finishers seems inevitable.