23. Is there a ban on political parties engaging in commercial activities?

Explicitly banned. However, the provision in Section 157 of the Act relates only to moneys allocated from the National Assembly fund, that may not be used directly or indirectly for the purpose of establishing any business or acquiring or maintaining any right or financial interest whatsoever in any business, or in any immovable property, except if the right or interest in the immovable property is to be used by the party solely for party-political purposes.