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.