Posted at 06:00 AM ET, 06/18/2012

Mitt Romney bus tour tests out VP possibilities

Former Massachusetts governor Mitt Romney will begin the fourth day of his five-day bus tour on Monday with a visit to Wisconsin, where he’ll be joined by House Budget Committee Chairman Paul Ryan (R-Wis.) at an event in Janesville before heading to neighboring Iowa.

Monday’s Trail Mix takes a look at the battlegrounds Romney is visiting — and why the bus tour matters not just in the White House race but also in the race for the VP spot.

By  |  06:00 AM ET, 06/18/2012

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