Most are old-guard candidates picked to run before energized prosecutors backed by a mass anti-corruption movement toppled the previous administration. Many voters are so skeptical that they campaigned for the election itself to be postponed to give them a new crop of choices.
Leading in most polls with roughly 30 percent backing is Manuel Baldizon, a wealthy 44-year-old businessman and longtime politician. His running mate is accused by prosecutors of influence trafficking, but as a candidate enjoys immunity from prosecution.
In the presidential race, Baldizon's most competitive rivals were television comedian Jimmy Morales, who has never held elective office, former first lady Sandra Torres and Zulia Rios, the daughter of a former dictator accused of genocide.
If none of the 14 candidates reaches 50 percent, a runoff will be held Oct 25.
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A key question is the level of protest vote in the face of a corruption scandal that has forced President Otto Perez Molina and Vice President Roxana Baldetti to resign. Both are currently in custody, accused of being involved in a customs kickback scheme.
Baldizon, who finished second in the last presidential race, initially campaigned on the slogan "It's his turn" a reference to the fact that the last four elections have been won by the previous runner-up. It struck many critics as a display of what's wrong with the country's politics.
At protests, demonstrators have chanted: "It's not your turn."