Santorum: Scant foreign travel while in the Senate drew notice in 2012 GOP campaign.
Walker: Yes, China in 2013 trade mission.
MEET THE MONEY: To know donors now is to tap them later.
Biden: Yes, headlined fundraiser for Democrats in late May at San Francisco home of billionaire Tom Steyer, a leading Democratic donor. Is actively fundraising for Democratic committees and candidates in 2014 midterms. Regularly schmoozes contributors at private receptions.
Clinton: Can tap deep well of Democratic and activist money. Former President Bill Clinton's vigorous fundraising for Democratic candidates further expands that potential source of donors for her. She's been raising money for Clinton foundation. The super PAC Ready for Hillary has raised nearly $6 million since its founding last year to support a candidacy. Priorities USA said in January it will back Clinton if she runs, signaling support from senior members of President Barack Obama's campaign team. Prominent bundlers such as Hollywood moguls Jeffrey Katzenberg and Haim Saban have indicated their support.
Cuomo: Flush coffers for 2014 governor's race.
O'Malley: Yes, has many bases covered as one of the party's top fundraisers. Raised more than $1 million for President Barack Obama's re-election campaign and in December ended his year as finance chairman for the Democratic Governors Association.
Bush: Yes, addressed well-heeled crowd at Manhattan Institute, led by GOP benefactor Paul Singer, in May. Flew to Las Vegas in March to meet GOP super-donor Sheldon Adelson and address Republican Jewish Coalition at Adelson's company airport hangar. In February, his short video for a GOP fundraiser at Donald Trump's Palm Beach, Florida, estate was a bigger hit than Cruz's keynote speech. Party in summer of 2013 for his immigration book at home of Woody Johnson, owner of the New York Jets and a leading Republican bundler. Has longtime Wall Street connections.
Christie: Yes, his year as GOP governors chairman gives him regular access to GOP's top national donors as he raises record sums to help candidates. Some big donors, though, question whether he's still a viable prospect after scandal surfaced over politically motivated traffic tie-ups in New Jersey. Addressed Romney's Utah retreat drawing together donors and establishment-focused policy people. Was among a handful of high-profile Republicans to meet with super-donor Sheldon Adelson in Las Vegas at his resort casino in late March. Followed up with more Jewish donors at New York event attended by Adelson in May. Courted donors for his re-election campaign in 2013 national tour, when Facebook CEO Mark Zuckerberg hosted an event at his Palo Alto home.
Cruz: Yes, met in March with top California conservative donors and keynoted Trump fundraiser. Has list of potential donors that's still growing after he collected more than 1.5 million signatures for the online petition "Don'tFundObamaCare," which he began in 2013.
Jindal: Yes, met leading GOP donors in New York City, as most GOP prospects do over time. Among prospective candidates who visited Iowa GOP donor Bruce Rastetter's farm in August 2013 for annual fundraiser for the governor.