NEW YORK — Women are bankrolling political campaigns this year more than ever, driven by their rising rank in the workplace, boosts in women’s wealth, and networks set up to gather their donations and bolster their influence.

In an election year when women could be a decisive force, the transformation is occurring at every level of political giving and in both parties, from grass-roots supporters sending in a few hundred dollars to the rarefied ranks of ultrawealthy donors who fund super PACs.

Forty-three percent of all reported contributions to federal candidates for this election have come from women, according to an analysis of Federal Election Commission data by Crowdpac, a political crowdfunding website, higher than any election cycle on record.

Women have also provided a fifth of all individual contributions to super PACs for this election, compared with just 1 percent in 2010, the year the Supreme Court’s Citizens United decision paved the way for new levels of giving to outside groups.

The increase is especially pronounced on the left, where Hillary Clinton has counted on female voters to help propel her toward the Democratic presidential nomination, and could rely on them even more in a general election race against Donald Trump.

Clinton’s run has also galvanized female donors, who had never played as large a role in a presidential candidate’s fund-raising.

Close to half of Clinton’s “bundlers’’ — the volunteer fund-raisers who solicit checks from friends and business associates — are women, compared with about a third of President Obama’s 2012 bundlers.

Nearly 60 percent of Clinton’s reported contributions, totaling $70 million, have come from women, according to Crowdpac, the most of any presidential candidate by far. (The tally does not include contributions too small to be itemized in election commission reports.)

In interviews, female donors in both parties described cascading cultural and economic changes that were driving their participation in political giving, long among the most exclusive men’s clubs in American culture.

More women are founding their own companies or rising to lead family businesses, or have already sold or retired from them, a common springboard to the upper reaches of political fund-raising. Within marriages, they said, women now had more authority to steer family decisions about political giving.

The rise of women in business is providing not just the discretionary income required for large contributions, but the kind of personal networks that power presidential and congressional fund-raising.

“The fund-raisers I went to in the late 1990s, it was mostly men writing the checks,’’ said Amy Rao, chief executive of a Silicon Valley data-management firm and a prominent Democratic donor. “Now it’s mostly women. And a lot of these women are younger. They work full time. They are writing their own checks.’’

Democrats like Clinton have benefited from groups like Emily’s List, which was founded in the mid-1980s to elect Democratic women who are abortion rights advocates, and in the process has helped build a growing network of female donors in the party.

Emily’s List alone has bundled more than $37 million for Democrats in this election cycle, a record pace for the organization and far more than any fund-raising effort on the right for female candidates.

But even among Republicans, female donors are playing a more significant role.

Some of the largest contributors to super PACs in the Republican primary have been women, including Diane Hendricks, the billionaire chief executive of a Wisconsin-based roofing and building supplies company, and Karen Buchwald Wright, the head of an Ohio company that makes compressors for hydraulic fracturing, or fracking.

Bundlers in both parties said their networks of potential donors, almost exclusively men until just a few years ago, were now composed mostly of other women.

And more of them had earned their wealth on their own.

But while women are making more contributions than ever, they still significantly trail men in the magnitude of their giving, with about two-thirds of all the money raised by federal candidates in 2016 coming from men, according to Crowdpac data.