All This on a Politician's Salary?

Tennessee State Senator, John Ford, is in court, being sued for additional child support by a former employee. His defence is that he already has two households, between which he shares his time, one with his ex-wife and their three children, and the other with his girlfriend and their two children. [Story at CNN; thanks to BrianF for the pointer]

In the hearing, Ford said he lives some days with ex-wife Tamara Mitchell-Ford and the three children they had together. On others, he said, he stays with his longtime girlfriend, Connie Mathews, and their two children.

This news story raises several questions:
1. Is this de facto polygamy?
2. Is this de jure polygamy?
3. How does he do this on a state senator's salary?
4. If Canada legalizes polygamy, Brian wonders, will this guy become a consultant? What will his fees be?