By Lucia Mutikani and Jason Lange WASHINGTON (Reuters) – Former U.S. President Barack Obama will campaign for Democratic Party candidates in Georgia, Michigan and Wisconsin later this month ahead of the Nov. 8 midterm elections that will determine control of the U.S. Congress. Obama will stump for candidates for federal and state offices, appearing in Atlanta on Oct. 28 before traveling to Detroit and Milwaukee on Oct. 29, his office said on Saturday. Republicans are seen winning control of the U.S. House of Representatives and possibly the U.S. Senate as well. Several Republicans who want to …