Poll results are listed in the table below in reverse chronological order, showing the most recent first. The highest percentage figure in each polling survey is displayed in bold, and the background shaded in the leading party's colour. In the instance that there is a tie, then no figure is shaded. The lead column on the right shows the percentage-point difference between the two parties with the highest figures. Poll results use the date the survey's fieldwork was done, as opposed to the date of publication. However, if such date is unknown, the date of publication will be given instead.
^ abcdefghijThis survey shows its poll results without disregarding those who are undecided or said they will abstain from voting (either physically or by voting blank). In order to obtain results comparable to other surveys and the official election results, the result shown in this table will be that obtained, with a simple rule of three, from disregarding undecided and/or abstaining voters from the totals offered in the survey.