Those attending the meeting included Deputy Prime Minister Pongthep Thepkanchana, secretary-general to the prime minister Suranand Vejjajiva, police chief Pol Gen Adul Saengsingkaew, defence permanent secretary Gen Nipat Thonglek and secretary-general of the National Security Council Lt Gen Paradorn Pattanatabut.
The meeting was held at the EC office at the Government Complex on Chaeng Wattana road, where they were greeted by the EC secretary general Phuchong Nutrawong.
Constituency MP candidate registration in the eight southern provinces has been temporary cancelled due to pressure by the anti-government protesters, led by provincial leaders of the People's Democratic Reform Committee (PDRC).
The southern provinces where registration has been temporarily cancelled are Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Trang, Krabi and Phuket.
Mr Surapong, also chairman of the Centre for the Administration of Peace and Order (Capo), said after the meeting that the security units proposed the EC use local police and military to secure the registration centres in the eight southern provinces.
He said Capo was ready to ensure law and order is imposed at registration venues.
The Election Commission was discussing whether to comply with the proposal made by the security units.