Campaigning "will be temporarily suspended until the government gives us minimum guarantees" that the leftist party's candidates can campaign safely, FARC vice presidential candidate Imelda Daza told AFP.

FARC presidential candidate Rodrigo Londono has been verbally attacked, and the group said 40 ex-fighters and relatives have been killed since the guerrillas reached a peace agreement with the government in late 2016.

Security personnel have had to protect Londono from people trying to assault him at campaign events or upon exiting media interviews.

"At the very least we demand respect for our physical integrity and the right to present our ideas," Daza said.

The peace deal that ended the five decades-long conflict guaranteed 10 seats for the FARC in Colombia's congress.

FARC candidates still need to campaign for the seats, however.

Colombians elect members of Congress in March, and will choose a new president in May.

Recent polls show that just one percent of voters support Londono -- formerly the top FARC guerrilla leader best known by his nom de guerre "Timochenko" -- in his presidential bid.

Nevertheless, his presence has raised passions, and Londono has been forced to cancel campaign stops.