Depends on the subsection, at least in the US. 501(c)(3) organizations are fairly limited on political activity. While 501(c)(4) organizations are less constrained, one does not get a tax break from donating to them. So you’ll see some 501(c)(3)s have an associated 501(c)(4) organization.
Just an FYI that most non-profits are often legally constrained on doing many sorts of political advocacy work, I think.
Depends on the subsection, at least in the US. 501(c)(3) organizations are fairly limited on political activity. While 501(c)(4) organizations are less constrained, one does not get a tax break from donating to them. So you’ll see some 501(c)(3)s have an associated 501(c)(4) organization.