Clinton: Steady presence now on speaking circuit, delivering paid speeches to industry groups and conferences and appearing before a number of groups with ties to the Democratic coalition.
Cuomo: Sparingly. Rarely leaves New York.
O'Malley: Yes, busy spring, with speeches to California Democratic state convention in March, Wisconsin Democrats in April and Massachusetts Democrats in May. Was Democratic governors' chairman for two years until December 2012.
Bush: Doing more this year politically after a long period of "a little self-restraint." Already a GOP establishment favorite. Recent travels to Tennessee, New Mexico, Nevada and Texas. Endorsed GOP establishment favorites in North Carolina Senate and California governor primaries. Skipped Conservative Political Action Conference in March, after giving keynote speech to the influential group a year earlier.
Christie: Yes, vigorous outreach now as the new Republican Governors Association chairman. Also spoke in March to Conservative Political Action Conference, which snubbed him last year. Addressed Republican Jewish Coalition spring meeting in Las Vegas, spending a full day with top donors and GOP operatives.
Cruz: Yes, vigorously. Spoke by video to National Rifle Association's April leadership forum. Addressed Conservative Political Action Conference in March, after landing the group's coveted keynote role in 2013. Has engaged in persistent courting of religious and economic conservatives in Texas and beyond; pitched social conservative principles at Values Voter meeting in October, while also meeting privately beforehand with evangelical leaders. Addressed 2012 Republican National Convention before he was even elected to the Senate.
Jindal: Big time and small time, far and wide. Giving May commencement address at Liberty University in Virginia, a familiar stop for prospective candidates, then South Carolina speech in June. Addressed NRA annual leadership forum in April, Conservative Political Action Conference in March, also in 2013. Made time for fundraiser for local sheriff in Michigan. Altogether, has spent much of his time during six years as governor on the road, talking to GOP and activist groups, supporting Republican candidates and promoting achievements. Has close ties with social conservatives. Created political action committee to help conservative candidates running for Congress, giving him continued opportunities to network nationally.