(Photos by Peter King) Governor Mitt Romney at a rally in Cedar Rapids.

President Barack Obama seeks to energize supporters at campaign rally in Virginia Beach campaign rally. “I see myself in you,” Obama tells supporters, “I believed in you (in 2008) and hope you still believe in me.” (Photo taken by CBS Radio News’ Mark Knoller)

President Barack Obama seeks to energize supporters at campaign rally in Virginia Beach campaign rally. “I see myself in you,” Obama tells supporters, “I believed in you (in 2008) and hope you still believe in me.” (Photo taken by CBS Radio News’ Mark Knoller)

In shirt sleeves, President Barack Obama waves to UNLV students as he begins his speech on the economy and college affordability. He announced a plan to cap student loan payments at 10% of payees discretionary income. (Photo taken by CBS News’ Mark Knoller)

In shirt sleeves, President Barack Obama waves to UNLV students as he begins his speech on the economy and college affordability. He announced a plan to cap student loan payments at 10% of payees discretionary income. (Photo taken by CBS News’ Mark Knoller)

Scene at Rick Santorum’s election night party ten minutes before its scheduled start time. And then after 40 minutes, much improvement in the size of the Santorum’s election party. (Photos taken by Rebecca Kaplan, CBS News and National Journal)

Great venue for Rick Santorum rally this morning: a shooting range in Monroe, La. (Photo by Lindsey Boerma, CBS News and National Journal)

Great venue for Rick Santorum rally this morning: a shooting range in Monroe, La. (Photo by Lindsey Boerma, CBS News and National Journal)

These Mitt Romney rally photos were taken by CBS News’ Donna Francavilla in Birmingham, Ala.

3,800 people filed into a concert auditorium at Michigan State University for a Ron Paul rally. Paul entered to see the packed 3,800-seat auditorium and said: “It looks like the revolution has arrived in Michigan!” (Photos by Lindsey Boerma, CBS News and National Journal)

(Photo taken by Rebecca Kaplan, CBS News and National Journal) Clever hats at Rick Santorum event in Traverse City, Mich. New merchandise! Santorum got loud applause for saying, “I care about the very poor,  too. And I want them to have the opportunity to rise in society.”

(Photo taken by Rebecca Kaplan, CBS News and National Journal) Clever hats at Rick Santorum event in Traverse City, Mich. New merchandise! Santorum got loud applause for saying, “I care about the very poor, too. And I want them to have the opportunity to rise in society.”

CBS News’ Dean Reynolds prepping to go live from Mitt Romney rally in Kalamazoo, Mich. for CBS Evening News (Photo by Sarah Boxer, CBS News & National Journal) 

CBS News’ Dean Reynolds prepping to go live from Mitt Romney rally in Kalamazoo, Mich. for CBS Evening News (Photo by Sarah Boxer, CBS News & National Journal) 

Mitt Romney at Ford Field in Detroit, Mich. for his economy speech: “Detroit should not just be the Motor City of America. It’s gotta be the Motor City of the world.” (Photos taken by Sarah Boxer, CBS News and National Journal)