Democratic presidential front-runner Hillary Clinton is ramping up her fundraising schedule, attending a number of fundraisers this week that cost donors six-figures to attend. The former secretary of state attended a pair of small, intimate gatherings in New York City on Thursday evening that cost donors a minimum of $100,000 to attend. On Wednesday, she attended two $100,000-a-head events in Englewood, N.J., and New York City. [The] Thursday event was at the home of Lynn Forester de Rothschild, a prominent New York businesswoman and supporter of Mrs. Clinton and Democratic candidates. Six-figure fundraisers are a new frontier in presidential politics, made possible by a 2014 Supreme Court case that tossed a key contribution limit governing how much donors could give across the board in a single election cycle. As a result, campaigns and parties can now fundraise in tandem with each other. Mrs. Clinton's events on Thursday [were] not the campaign's first foray into high-dollar fundraising. In April, the campaign held an event at the home of actor George Clooney. The event cost $33,400 to attend, though donors who contributed $353,400 could sit at the head table.