Some 450 delegates are in the German capital to vote on the programme, which includes a rent cap and policies to ease the cost of living crisis.
The Left was weakened by a split early last year when Sahra Wagenknecht, a prominent figure in the party, left to form her own alliance.
It is currently polling at around 3-4% in German polls, leaving it at risk of failing to pass the 5% threshold usually needed for entry into the Bundestag, Germany’s lower house of parliament.
However, The Left is attempting to bypass the hurdle by winning three direct seats, relying on party grandees Gregor Gysi, Bodo Ramelow and Dietmar Bartsch to secure victory in their constituencies.
The party is confident of entering parliament again, with co-leader Ines Schwerdtner highlighting thousands of new members and large attendances at campaign events.
“The mood is really breathtaking,” she said.
The campaign is being led by top candidates Jan van Aken and Heidi Reichinnek.
