Capitalize as part of a proper name: the Florida Peninsula, the Upper Peninsula of Michigan, the Korean Peninsula, the Indochina Peninsula.
Acronym for political action committee. Raises money and makes contributions to campaigns of political candidates or parties. At the federal level, contribution amounts are limited by law and may not come from corporations or labor unions. Enforcement overseen by the Federal Election Commission. PAC acceptable on first reference; spell out in body of story. A super PAC is a political action committee that may raise and spend unlimited amounts of money, including from corporations and unions, to campaign independently for candidates for federal office. Its activities must be reported to the FEC, but are not otherwise regulated if not coordinated with the candidate or campaign.