Obama's 'Betting on America' tour (31 images)

Audience members watch as President Barack Obama delivers remarks at a campaign on the campus of Carnegie Mellon University in Pittsburgh, Pennsylvania on July 6, 2012. President Obama is on the second day of his, "Betting on America" bus tour through Ohio and Pennsylvania. UPI/Kevin Dietsch

An audience member watches as President Barack Obama delivers remarks at a campaign event at Dobbins Elementary School in Poland, Ohio on July 6, 2012. President Obama is on the second day of his, "Betting on America" bus tour through Ohio and Pennsylvania. UPI/Kevin Dietsch

President Barack Obama holds Nathan Maxwell Johnson, 9 months, after holding a campaign rally at Dobbins Elementary School in Poland, Ohio on July 6, 2012. President Obama is on the second day of his, "Betting on America" bus tour through Ohio and Pennsylvania. UPI/Kevin Dietsch

Audience members chant, "four more years" as President Barack Obama delivers remarks at a campaign event at Dobbins Elementary School in Poland, Ohio on July 6, 2012. President Obama is on the second day of his, "Betting on America" bus tour through Ohio and Pennsylvania. UPI/Kevin Dietsch