Rep. Mike Capuano struggles to understand why some voters think race and gender are relevant in this race. When Capuano campaigns, he doesn't talk much about his opponent, focusing on his own record.
Democratic presidential candidate Bernie Sanders addresses a rally Wednesday at the Santa Clara County Fairgrounds in San Jose, Calif. The senator's campaign is intently focused on a big win in the state on June 7, and has poured money into TV ads there.
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Democratic presidential candidates Sen. Bernie Sanders and Hillary Clinton stand together before the start of the Univision-Washington Post debate at Miami Dade College in Miami on Wednesday.
Democratic presidential candidates Sen. Bernie Sanders and Hillary Clinton take the stage before a Democratic presidential primary debate at the University of Wisconsin-Milwaukee on Thursday.
Sen. Bernie Sanders and former Secretary of State Hillary Clinton spar during a Democratic presidential primary debate hosted by MSNBC at the University of New Hampshire on Thursday.
Democratic presidential candidate, Sen. Bernie Sanders, I-Vt., gestures towards Democratic presidential candidate, Hillary Clinton during the NBC, YouTube Democratic presidential debate in Charleston, S.C., on Sunday.