The ballot for congressional elections in which Venezuela’s ruling socialists face their stiffest challenge in 16 years is dizzying enough in the industrial state of Maracay, with more than two dozen parties on the ballot.

But most worrisome for incumbent Ismael Garcia, a fierce opponent of the deeply unpopular socialist administration, is a 28-year-old parking lot attendant whose name will appear directly beside his on the ballot, under a nearly identical party title and logo.