Healey, Diehl decline to release tax returns in race for Mass. governor

Both major candidates running for governor in Massachusetts have refused to share copies of their latest tax returns.

The disclosure isn't required by law, but many politicians provide the documents when running for state or federal offices, especially U.S. president.

Maura Healey, the Democratic nominee for governor, released several years of tax returns when she was first running for attorney general in 2014. At the time, a campaign spokesman told the Boston Globe the move was an effort to become the "most open and transparent attorney general in the country." And in 2006, then Attorney General Thomas Reilly proactively released his tax returns in his losing campaign for governor.

But both Healey and Republican Geoff Diehl declined WBUR's request to release last year's tax filings. The campaigns said they might change their minds if their opponent releases the documents first.