He said new political factors could also help his case.

Officials in California and other states point to a political factor.

"There are a great many political, economic and social factors to be considered."

Social, political and economic factors account for this new development.

In the 1970s oil prices increased due to economic and political factors.

Task force participants said there was another potential political factor.

This identification is based on economic rather than political factors.

No doubt political factors now play a greater part in the selection than they did.

Experts from countries with successful population control strategies all say social and political factors can play a major role.

For all that, there are political factors at work behind the scenes.