(CNN) - New York City Mayor Michael Bloomberg announced Wednesday the launch of an "independent spending campaign" that will aid moderate candidates in both parties during the next three weeks.
"It's critically important that we have elected officials in Washington, Albany, and around the nation who are willing to work across party lines to achieve real results," Bloomberg said in a statement on his website.
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Known as an independent, the three-term mayor will spend eight figures on the campaign, billed as an effort to back candidates who "have shown a willingness to work in a bi-partisan fashion." Howard Wolfson, a close Bloomberg adviser and former aide to then-Sen. Hillary Clinton, will lead the campaign.
The expenditure represents Bloomberg's largest move yet to influence national races. The effort will focus on candidates who want to crack down on illegal guns–an issue on which Bloomberg is highly vocal–and who advocate education reform policies.
Bloomberg will also make contributions to marriage equality referenda, the statement read.
The mayor served his first two terms as a registered Republican, but ran for a third term as an independent. He has not endorsed a presidential candidate this cycle.
Records with the Federal Election Commission show Bloomberg has already donated this year to Democratic Congressional candidate Valdez Val Demings in Florida, Democratic Rep. David Cicilline of Rhode Island, Democratic Senate candidate Richard Carmona of Arizona, and Democratic Sen. Bill Nelson of Florida.