Conversation so far:
Why was William McKinley defeated for re-election?
Recognizing McKinley's potential, the Democrats, whenever they controlled the Ohio legislature, sought to gerrymander or redistrict him out of office.
What does gerrymandering mean?
Gerrymandering is a practice intended to establish a political advantage for a particular party or group by manipulating district boundaries.
What did William McKinley go on to do instead of Ohio legislation?
Even before McKinley completed his term in Congress, he met with a delegation of Ohioans urging him to run for governor.

Question: what was his greatest accomplishment mentioned in the article?
Self-contained rewrite: What was William McKinley's greatest accomplishment mentioned in the article on Ohio legislation?