Sen. McCain in Boston for Scott Brown fundraiser

BOSTON (AP) -- Arizona Sen. John McCain is heading to Boston to attend a fundraiser for fellow Republican Scott Brown.

The fundraising is set for Friday evening at the Taj Hotel in Boston. Donors are being urged to give up to the maximum limit of $5,000 for the 2012 election cycle.

Democrats say the fundraiser shows that Brown, who describes himself as bipartisan, is a loyal Republican.

Massachusetts Democratic Party Chair John Walsh said Brown and McCain are "both Mitt Romney Republicans."

But a Brown campaign spokesman said Brown is honored to have the support of an American hero like McCain. Spokesman Colin Reed said that like Brown, McCain doesn't hesitate to break from his party to do what's right.

Brown is locked in a tight reelection fight with Democrat Elizabeth Warren.