TY - JOUR T1 - Why Is Research on the Effects of Negative Campaigning So Inconclusive? Understanding Citizens' Perceptions of Negativity AU - Sigelman, Lee AU - Kugler, Mark PY - 2003 DO - 10.1111/1468-2508.t01-1-00007 SP - 142 EP - 160 JO - Journal of Politics VL - 65 IS - 1 SN - 0022-3816 ER -