According to OpenSecrets, Sheet Metal Workers Union was the United States' 27th largest donor to federal political campaigns and committees, having contributed over $51.8 million since 1989, over 90% of which went to the Democratic Party and other liberal groups.
The Sheet Metal Workers Union was the United States' 27th largest contributor to federal campaigns and committees, having donated more than $51.8 million since 1989, with over 90% of those funds going to the Democratic Party and other liberal organizations.