Support for the Social Democrats remained between 14.2 percent and 18.7 percent for the whole of 2017 and in December it was 14.7 percent, but in January 2018 it was only 11 percent.
The support for IRL once again decreased. While in August 2017 it was 3.8 percent and in the fall it rose and reached 8.3 percent in December, in January it once again fell below the election threshold of 5 percent -- to 4.5 percent.
"One of the reasons behind a decline in the support for the coalition parties is the discontent with the income tax reform, which has caused uncertainty and has also seemed very unfair to a big part of working pensioners," Voog said.
"Another reason is the accelerating price increase, which has been amplified by the government's excise duty policy and which is expressing itself in more and more active shopping trips with increasingly bigger amounts to the less inexpensive Latvia. And also scandals connected to the government, the most recent being the one with Urmas Reinsalu which happened right during the survey week," he added.
According to Voog, another opposition party which achieved record rating highs this month was EKRE with its 18.4 percent of support.
The total support of the three parliamentary opposition parties totaled 58 percent in January.
The answers of the people who listed "no preference" as to party identification were eliminated from the outcome to make it as comparable as possible to the outcome of a parliamentary election held during the survey period. In the January poll the ratio of such answers was 28.8 percent.
Kantar Emor interviewed 1,107 voting-age citizens of ages 18-74 for the survey from January 18 to 25.