Question: Which entity did the Green Independent candidate inform he was no longer seeking election in the election in which Incumbent Democratic Governor John Baldacci was term-limited?
Sentence (from "Maryland gubernatorial election, 1966"): Baltimore County Executive Spiro Agnew, who would later go on to be selected by Richard M. Nixon as his running mate in 1968, was nominated by the Republican Party as their gubernatorial candidate.
Relevant evidence: No