| | Following the resignation of incumbent congressman Robert F. Jones, McCulloch ran in the 1947 special election and defeated [[Democrat]] opponent Joseph B. Quatman by eleven percentage points.<ref>[https://www.ourcampaigns.com/RaceDetail.html?RaceID=443561 OH District 04 - Special Election Race - Nov 04, 1947]. ''Our Campaigns''. Retrieved July 24, 2021.</ref> He won re-election to a full term in 1948 by a similar margin,<ref>[https://www.ourcampaigns.com/RaceDetail.html?RaceID=445897 OH - District 04 Race - No 02, 1948]. ''Our Campaigns''. Retrieved July 24, 2021.</ref> Most of his following re-election bids faced no serious challenges, though the coattails of [[Lyndon B. Johnson]] in 1964 amidst the [[United States presidential election, 1964|concurrent presidential race]] that aided his opponent reduced his margin of victory significantly that year.<ref>[https://www.ourcampaigns.com/CandidateDetail.html?CandidateID=33733 Candidate - William M. McCulloch]. ''Our Campaigns''. Retrieved July 24, 2021.</ref> | | Following the resignation of incumbent congressman Robert F. Jones, McCulloch ran in the 1947 special election and defeated [[Democrat]] opponent Joseph B. Quatman by eleven percentage points.<ref>[https://www.ourcampaigns.com/RaceDetail.html?RaceID=443561 OH District 04 - Special Election Race - Nov 04, 1947]. ''Our Campaigns''. Retrieved July 24, 2021.</ref> He won re-election to a full term in 1948 by a similar margin,<ref>[https://www.ourcampaigns.com/RaceDetail.html?RaceID=445897 OH - District 04 Race - No 02, 1948]. ''Our Campaigns''. Retrieved July 24, 2021.</ref> Most of his following re-election bids faced no serious challenges, though the coattails of [[Lyndon B. Johnson]] in 1964 amidst the [[United States presidential election, 1964|concurrent presidential race]] that aided his opponent reduced his margin of victory significantly that year.<ref>[https://www.ourcampaigns.com/CandidateDetail.html?CandidateID=33733 Candidate - William M. McCulloch]. ''Our Campaigns''. Retrieved July 24, 2021.</ref> |