Nevada and Arizona could make history this fall, with both states positioned to elect the first female-majority legislative chambers in the nation's history. Nationally, campaign operatives say they cannot name a single state that does not have a record number of women running for state legislatures, and female candidates alone could flip party control of at least seven legislative chambers. The stage is set for a historic year for female political power at a time when state governments are filling the power vacuum left by a feuding Congress.