Democratic presidential candidate Sen. Barack Obama greets those who attended a rally at the Indiana State Fairgrounds in Indianapolis, Ind., Wednesday. (Mary F. Calvert / The Washington Times)

Thousands turned out to see Obama speak Wednesday. (Mary F. Calvert / The Washington Times)

An Obama sign decorates a sandbar on the Missouri side of the Mississippi River just over the border from Illinois, Thursday. (Mary F. Calvert / The Washington Times)

College Republicans from the University of Missouri at Columbia, Mo. show their support for John McCain outside the site of a rally for Sen. Joe Biden, D-De, Thursday. The parking lot in the background refused parking access to attendees. (Mary F. Calvert / The Washington Times)

Obama supporters from the Midwest fill a pavilion in Jefferson City, Mo. to see Sen. Joe Biden, D-DE, Thursday. (Mary F. Calvert / The Washington Times)

A U.S. Secret Service officer watches the crowd who wait to shake Sen. Biden's hand after the rally. (Mary F. Calvert / The Washington Times)

Gun rights are a big issue in swing state Missouri where a McCain sign decorates the yard of a supporter off Highway 63 in rural Missouri, Friday. (Mary F. Calvert / The Washington Times)

KOLR-TV reported that property owner Ronnie Ford was seen by his neighbors erecting the sign, though other residents said they were unsure who put up the sign on Highway 63 near West Plains in rural Missouri. (Mary F. Calvert / The Washington Times)

Sen. Hillary Clinton, D-NY, returned to Little Rock, Ark. to hold a rally for Presidential candidate Sen. Barack Obama, on the steps of the Arkansas State Capitol, Friday. (Mary F. Calvert / The Washington Times)

Sen. Clinton hears from her supporters in a rope-line after the rally. (Mary F. Calvert / The Washington Times)

Sen. Clinton supporters in the crowd carried signs welcoming her back to Arkansas, Friday. (Mary F. Calvert / The Washington Times)