(CNN) - The candidates and their campaigns hit the trail Friday, making stops in Pennsylvania, California, Washington, D.C. and Virginia.
See their full schedules after the jump.
10:50 a.m. ET - President Barack Obama will deliver remarks at Washington-Lee High School in Arlington, Virginia.
12 p.m. ET - Mitt Romney holds a campaign event in Pittsburgh, Pennsylvania.
1:15 p.m. ET - Vice President Joe Biden will make a speech at the Young Women's Christian Association conference in Washington, D.C.
2:30 p.m. ET - Texas Rep. Ron Paul holds a lunch fundraiser in San Diego, California.
10:00 p.m. ET - Ron Paul holds a town hall meeting in San Diego, California.
Also Friday morning, Romney and Rick Santorum will meet privately in Pittsburgh for the first time since Santorum suspended his presidential campaign on April 10.