MAY 2012
Note: All times are local
May 2-6: The Libertarian Party holds its national convention in Las Vegas, Nev. Nominees for president and vice-president are be elected on Saturday, May 5.
May 2: Mitt Romney holds a campaign event in Chantilly, Va. at 10: 30 a.m. He then hosts a fundraiser in Washington, D.C. at 6 p.m.
May 2: Vice President Joe Biden speaks at Lafaytte College in Easton, Pa. at 7 p.m.
May 2: Newt Gingrich officially suspends his campaign at the Hilton Arlington - Gallery II in Arlington, Va. at 3 p.m.
May 2: Ron Paul holds a campus town hall at California State University in Fullerton, Calif. at 7 p.m.
May 3: Mitt Romney holds an event in Portsmouth, Va. with Governor Bob McDonnell at 1:15 p.m. He hosts a fundraiser in Wheeling, Ill. at 6 p.m.
May 3: Ron Paul has lunch with voters at Sacramento Marriott Rancho Cordova in Rancho Cordova, Calif. at 11:30 a.m. He then hosts a college town hall meeting in Davis at 7 p.m.
May 4: Ron Paul has lunch with voters at San Diego Marriott Gaslamp Quarter in San Diego, Calif. at 11:30 a.m. At 7 p.m., he hosts a town hall meeting at University of California at San Diego.
May 4: Rick Santorum meets with Mitt Romney.
May 6: Ron Paul and Rand Paul hold a rally sponsored by Tea Party Express at 2 p.m. in Austin, Texas.
May 8: Indiana, North Carolina, and West Virginia hold their presidential primaries. Wisconsin holds Democratic primaries to select candidates in recall elections against Gov. Scott Walker, Lt. Gov. Rebecca Kleefisch, and four Republican state senators.
May 11: Michelle Obama gives the commencement address at graduation ceremonies at Virginia Polytechnic Institute and State University.
May 12: Michelle Obama gives the commencement address at graduation ceremonies at North Carolina Agricultural and Technical State University, Greensboro, N.C.
May 12: Mitt Romney gives the commencement address at Liberty University in Lynchburg, Va.
May 14: Barack Obama gives the commencement address at graduation ceremonies at Barnard College in New York City, N.Y.
May 15: Nebraska and Oregon hold their presidential primaries. This is also the tentative date for Idaho's presidential primary.
May 19: Senator Marco Rubio, R-Flor., is the keynote speaker at the Republican Party's annual Silver Elephant dinner.
May 21: Barack Obama gives the commencement address at graduation ceremonies at Joplin High School in Jopin, Mo.
May 22: Arkansas and Kentucky hold their presidential primaries.
May 23: Barack Obama gives the commencement address at graduation ceremonies at the Air Force Academy.
May 26: Joe Biden gives the commencement address at graduation ceremonies at the U.S. Military Academy at West Point.
May 29: Texas holds its presidential primary.
JUNE 2012
Note: All times are local
June 4: Joe Biden gives the commencement address at graduation ceremonies at Cypress Bay High School in Weston, Fla.
June 5: California, Montana, New Jersey, New Mexico and South Dakota hold their presidential primaries.
June 5: Wisconsin holds recall elections in which Democrats will challenge Gov. Scott Walker, Lt. Gov. Rebecca Kleefisch, and Republican state senators Scott Fitzgerald, Pam Galloway, Terry Moulton, and Van Wanggaard.
June 12: Arizona holds a special general election to fill the seat of Ex-Rep. Gabrielle Giffords, D-Ariz.
June 14: Joe Biden gives the commencement address at graduation ceremonies at Tallwood High School in Virginia beach, Va.