Iowa, early voting starts today. You started it all four years ago, and Barack is counting on you again now. -mo

— Michelle Obama (@MichelleObama) September 27, 2012

WASHINGTON--After overnighting in Chicago, First Lady Michelle Obama heads to the battleground states of Iowa and Wisconsin. She hits a rally at Lawrence University in Appleton and the University of Northern Iowa in Cedar Falls. Iowa started early voting on Thursday and the Obama campaign is making a big push to lock in votes as early as possible.

The "you started it" reference in Mrs. Obama's Tweet is this: Obama won the Iowa caucus during the 2008 Democratic primary season--Iowa was the first state to vote--and the victory propelled Obama on the path to win the Democratic nomination--and the White House.