Putin 40%
Shoygu (Minister of Emergency Situations) 18%
Zhirinovsky (Duma vice-speaker) 12%
Ivanov (Minister of Defence) 10%
Luzhkov (regional governor) 9%
Tuleev (regional governor) 7%

Top 6 least trusted:

Chubais (head of state energy company) 22%
Zhirinovsky (Duma vice-speaker) 16%
Zuganov (communist leader) 13%
Yeltsin (ex-president) 12%
Berezovsky (ex-National Security Advisor, oligarch) 12%
Abramovich (regional governor, oligarch) 9%

Will vote for the president:

Zhirinovsky 18%
Medvedev 18%
Ivanov 17%
Zuganov 16%
Glaz'ev 7%
Ryzhkov 5%
Rogozin 5%
Kas'janov 4%
Javlinsky 4%

according to Levada Center, in Russian.

I think of those US call Ryzhkov, Kas'janov and Javlinsky "democrats".

As for Luzhkov, speculation is that he'll step down before 2008 and will retire with his wife's billions.