CNN  —  An overseas ballot process that has long been seen as sacrosanct by both parties, due to its connection to US military members serving in foreign countries, is the target of multiple GOP-backed lawsuits filed in recent days. The new legal assault comes as ballots cast by Americans abroad have become very favorable for Democrats and could be crucial in getting Vice President Kamala Harris over the finish line. In addition to the new lawsuits filed by Republicans in Pennsylvania, North