Korean Political History I: Chapter 8, Exercise 2 — Possible Solution
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CORRECTION
The protests won direct presidential elections, but the opposition did not
come to power. In December 1987 Roh Tae-woo, announced earlier as the
regime's successor, won with 36.6 percent of the vote while the opposition
was split between two candidates.

REWRITE
"The 1987 protests won direct presidential elections; in December Roh
Tae-woo won the first of them with 36.6 percent against a divided
opposition."

CAUTION
I did not research the election's conduct or name the opposition candidates.