The ferment, political analysts here say, reflects deep doubts about the future of the Mexican presidential system.

His reaction reveals a certain nervousness about unpredictable behavior, but no deep doubts.

Going down the elevator, she had her first moments of deep doubt.

There followed a somewhat wary interaction, and the outcome was in deep doubt, until two things tipped the balance.

The impasse left the future of the bill in deep doubt and each party blaming the other.

However, many Liberals still had deep doubts about him and his commitment to their political party.

A "good German" in other words; and yet, as the story continues, this is thrown into ever deeper doubt.

Leonard, sensitive to such pressures, was in deep doubt.

The Palestinians, too, have deep doubts about peace.

Even for death penalty supporters, these facts should raise deep doubts about this conviction.