(CNN) - The candidates and their campaigns hit the trail Wednesday, making stops in Virginia, California, Pennsylvania and Washington, D.C.
See their full schedules after the jump.
10:30 a.m. ET - Mitt Romney holds a campaign event in Chantilly, Virginia.
3:00 p.m. ET - Newt Gingrich announces the suspension of his presidential campaign in Arlington, Virginia.
10:00 p.m. ET - Ron Paul holds a campus town hall meeting in Fullerton, California.
Also Wednesday, Romney will visit the Republican National Committee headquarters in Washington, D.C. In the evening, he will hold a private roundtable and fundraiser with Virginia Gov. Bob McDonnell in Pentagon City, Virginia.
President Barack Obama will also attend two campaign fundraisers at the W Hotel in Washington, D.C. Wednesday evening.
Vice President Joe Biden, meanwhile, will deliver remarks in Easton, Pennsylvania at Lafayette College.