More than 12,500 switch parties 

CASPER — More than 12,500 Wyoming voters changed their party affiliation this summer, new numbers from the Wyoming Secretary of State’s office show.

The long-awaited data, which covered a period between July 6 and Sept. 20, addresses the question of crossover voting — or the practice of members switching their party affiliation on Election Day to influence the result of another party — and its inf...