(in some US states) a meeting at which local members of a political party register their preference among candidates running for office or select delegates to attend a convention

Hawaii holds its nominating caucuses next Tuesday

he stumbled through the Iowa caucuses and the New Hampshire primary

a conference of members of a legislative body who belong to a particular party or faction

he attended the morning caucus in the Old Senate Chamber where his fellow Democrats selected the new leadership

a group within an organization or political party which meets independently to discuss strategy or tactics

up to fifty caucuses met daily on conference grounds to discuss lobbying strategies

he was forced out by a hard-left caucus which had taken over his constituency party

hold or form a legislative caucus

Republicans briefly caucused

there is one Independent who caucuses with the Democrats