Viktor Sheiman's resignation has been expected since he was named head of Lukashenka's campaign for reelection some weeks ago. The law forbids government officials from holding two posts simultaneously.
Lukashenka named Gennady Nevyglas, the current secretary of the Security Council, to replace Sheiman.
The Belarusian leader is running for a third term in the March ballot.
(RFE/RL with agencies)
Video Roundtable On Belarus/Ukraine
On December 8, 2005, RFE/RL and the Policy Association for an Open Society (PASOS) jointly conducted a roundtable discussion on issues relating to Belarus's post-Soviet transition. To view video of the roundtable, click here.