"burden" with outright denial of the right EFTA00191856 to vote. Precedent does not define "bur- den" so narrowly, however. See, e.g., Har- per a Virginia Board of Election& 383 U.S. 663, 66647, 86 S.Ct 1079, 1081, 16 L.Ed.2d 169 (1966) (poll tax constitutes bur- den). Nor is "denial" of the right to vote the only behavior