The provisions of section 401(g) prohibit any showing of preference by a labor organization or its officers which is advanced through the use of union funds to criticize or praise any candidate. Thus, a union may neither attack a candidate in a union-financed publication nor urge the nomination or election of a candidate in a union-financed letter to the members. Any such expenditure regardless of the amount, constitutes a violation of section 401(g).[38]