Both candidates have struggled with scandals and unfavorable media coverage. The poll found that 28% of voters hold an unfavorable opinion of Giannoulias, who has been hurt by his connections with his family's recently-folded bank. The poll also found Kirk struggling to win over conservative voters -- 36% of them say they have "no opinion on whether they like the GOP candidate."
Meanwhile, Green Party candidate LeAlan Jones (6%) and Libertarian Party candidate Mike Labno (3%) attract enough voters for the Chicago Tribune to speculate that they could end up swaying the race one way or the other.
The TPM Poll Average for this race shows Kirk leading Giannoulias 41.3%-40.0%.