Latest News Wires Michelle Obama in Arizona: Could it swing to Democrats?

Michelle Obama campaigned for her husband in Arizona and Colorado Monday. Mrs. Obama will be in Nevada and New Mexico Tuesday.

(AP Photo/Arizona Daily Star, Ron Medvescek)

 First lady Michelle Obama was in Tucson on Monday as part of a four-state campaign push in the West — a visit that has political analysts saying that Arizona could very well be up for grabs in November's presidential election.