However, the head of the Election Commission is wary, believing such a move could further anger anti-government protesters. Somchai Srisutthiyakorn says he prefers to use buildings belonging to civilians where possible.
The proposal to use police and army properties emerged during a meeting on Monday between representatives of the caretaker government and members of the Election Commission at the Chaeng Watthana government complex.
MP candidate registration has been blocked in 38 constituencies in eight southern provinces: Nakhon Si Thammarat, Chumphon, Surat Thani, Krabi, Trang, Songkhla, Phuket and Phatthalung.
All of the provinces are strongholds of the opposition Democrat Party, which is boycotting the Feb 2 poll.
The government side at Monday's meeting was led by caretaker Foreign Minister Surapong Tovichakchaikul. Also attending were National Security Council (NSC) chief Paradorn Pattanatabut and national police chief Pol Gen Adul Saengsingkaew.
Mr Surapong said the caretaker government and security agencies had suggested that the EC opt to use venues under the supervision of police stations or military agencies for election registration.
He stressed it was only a recommendation and that the final decision was up to the EC.
Mr Somchai said he had directed election directors of the 38 affected constituencies to use places that belong to civilians if they decide to change the registration venues.
He said he feared the use of police and military-controlled areas could provoke protesters and lead to possible confrontations if they continue their efforts to besiege registration venues.
"Of course the soldiers or police officers must protect their venues and property and will not let anybody in," he said. "If the protesters show up, I am afraid this will cause the situation to escalate further."