進歩党
the Progressive Party―the Progressionists
進歩党員
the conservative party―the conservatives
the revolutionists
the party out of office―the party out of power―the outs―the Opposition
the Constitutional Party―the Constitutionalists
the Liberal Party―the Liberals
the democratic party―(米国のは)―the Democrats
the moderate party―the moderates
the radical party
a Liberal
the Imperialists
a radical
the opposition party
the party in office―the party in power―the ins