The phrase "political lexicon" refers to the specific vocabulary and terms used in the world of politics. It includes words and expressions related to government, elections, policies, and political ideologies. Full definition
The talk of treaty has been a part of the broader political lexicon since Bob Hawke was presented with the Barunga Statement, which called for a treaty with the Commonwealth of Australia. (croakey.org)
to describe that most cherished of phrases in the political lexicon of the Lone Star State. (epolitics.com)
Yet, within a hundred years, democracy had become established as part of the political lexicon across the populations of America, France, Britain and Ireland. (blog.politics.ox.ac.uk)