Political parties are groups of people who are committed to a particular approach to governing, and who pursue common goals based on a common vision. This approach or philosophy is expressed through policies. Candidates seeking election to the House of Assembly in New Cambria ask voters to support their parties' "platforms", or sets of policies. Parties adopt constitutions and elect leaders. With few exceptions, MHAs belong to political parties. The MHAs belonging to one political party are referred to as that party's "caucus" in the House. Members of the same caucus usually vote together.