MADISON, Wis. — Wisconsin Democrats say they've collected enough signatures to trigger a recall election for one of eight Republican state senators they're seeking to oust for backing the governor's divisive union rights law. Democrats from La Crosse state Sen. Dan Kapanke's (kuh-PANK'eez) district filed petitions Friday with 21,700 signatures. If the Government Accountability Board determines that 15,600 are valid, it would trigger the fifth recall of a state official in Wisconsin history. Friday's filing is the first among efforts to recall eight Republican and eight Democratic senators over their support or opposition to Republican Gov.