Emboldened by the electorate’s rejection this month of an income tax repeal, a broad coalition of human service advocates, organized labor, and community groups is mobilizing to lay the political groundwork for major tax increases, confident that Beacon Hill will join them in seeking new revenues.

Lawmakers joined a meeting of roughly 65 people in Boston Wednesday night, just two weeks after the election, to discuss outreach and education, emphasizing the need for new monies to maintain public infrastructure and programs.

“I’m talking about comprehensive tax reform,” said Judy Meredith, a veteran human services lobbyist who is organizing the campaign. “Let’s look at the income tax, let’s look at the sales tax, let’s look at a lot of the corporate and business taxes.”