According to the Alliance for Justice: 

Examples of independent election-related activities in which 501(c)(4)s like the WV FREE Action Fund may engage include:

• Conducting nonpartisan voter education activities
• Endorsing federal and state candidates;
• Distributing communications to the general public -- including through Get out the Vote activities, voter registration drives, billboards, broadcast ads -- or to the WV FREE Action Fund membership in support or opposition to federal or state candidates.
• Ask candidates to pledge to support the organization's issues if elected.
• Producing candidate voter guides or comparisons of where candidates stand on the issues;
• Creating an affiliated 527 political organization called a "connected PAC" or "separate segregated fund" to make contributions to federal candidates; additionally,many states allow 501 (c)(4) organizations to create connected state PACs; and
• Pooling resources to engage in the above activities subject to federal and/or state disclosure rules and limits.