[h=3]By LAURA MECKLER and SARA MURRAY[/h] After more than one million television ads, countless appearances and three contentious debates, the 2012 presidential election remained on a knife's edge with both candidates seeking to shore up support in states crucial to their chances Tuesday.
President Barack Obama cheered on backers in Wisconsin, Ohio and Iowa, evidence that his campaign aimed to build a firewall in the Midwest to try to block his Republican rival.
Getty Images Barack Obama appeared at a rally with Bruce Springsteen in Madison, Wis.
Agence France-Presse/Getty Images Mitt Romney greeted supporters in Lynchburg, Va.
As Election 2012 draws near, never have so many millions of dollars been spent to move so few votes. So what factors determine who wins in such a race? Jerry Seib joins the News Hub to discuss. Photo: AP.
[h=3]Related Video[/h]
President Barack Obama cheered on backers in Wisconsin, Ohio and Iowa, evidence that his campaign aimed to build a firewall in the Midwest to try to block his Republican rival.
Getty Images Barack Obama appeared at a rally with Bruce Springsteen in Madison, Wis.
Agence France-Presse/Getty Images Mitt Romney greeted supporters in Lynchburg, Va.
As Election 2012 draws near, never have so many millions of dollars been spent to move so few votes. So what factors determine who wins in such a race? Jerry Seib joins the News Hub to discuss. Photo: AP.
[h=3]Related Video[/h]