Some 12.7 percent of respondents said in the latest poll that they would vote for the LSDP, led by Vilija Blinkeviciute, if general elections were held next Sunday, slightly down from 14 percent who said so in September.
"For Lithuania", led by former Prime Minister Saulius Skvernelis, came in second with 11.6 percent, slightly up from 11 percent in September.
The Democrats were followed closely in third place by Foreign Minister Gabrielius Landsbergis' Homeland Union with 11.3 percent support, up from 9.4 percent.
Further down the list is the Lithuanian Farmers and Greens Union with 8.9 percent (7.4 percent in September), followed by another two opposition parties, the Labor Party and the Freedom and Justice, both with 5.8 percent (unchanged and down from 6.2 percent, respectively).
The Homeland Union's coalition partners, the Liberal Movement and the Freedom Party, saw their support edge up to 5.4 percent and 2.7 percent, respectively, from 4.9 percent and 2.5 percent in September.
Some 28.3 percent of respondents said they were undecided or would not go to the polls.
Baltijos Tyrimai conducted the representative survey, commissioned by LRT, between October 26 and November 8, with 1,021 people polled through in-person interviews.