WATERLOO --- Republican Iowa House District 20 candidate David Wieland and Iowa House Speaker Christopher Rants of Sioux City have denounced a political advertisement released this weekend against Wieland showing what appears to be a covered cadaver on a gurney, assailing his position on stem-cell research. Wieland said he supports adult, but not embryonic, stem-cell research, but said the ad implies "If you vote for Dave Wieland, you're going to kill people." He and Rants called the ad a new low in the already vitriolic campaign between Wieland and Democrat Doris Kelley for the District 20 seat being vacated by...