Huge. From the Herald:
Ayanna Pressley is launching a challenge to long-time incumbent Democratic Congressman Michael Capuano, launching what could be one of the state’s most competitive — and closely watched — primaries this election cycle.
“Today I humbly announce my candidacy for the Democratic nomination in the 7th Congressional District,” Pressley said in a statement. “This district and these times demand more than an ally, they demand an advocate and a champion.”