If you say that someone is using pork barrel politics, you mean that they are spending a lot of government money on a local project in order to win the votes of the people who live in that area.
[mainly US, disapproval]
Pork-barrel politicians hand out rents to win votes and influence people.
pork barrel in British English
noun
slang, mainly US
a.
a bill or project requiring considerable government spending in a locality to the benefit of the legislator's constituents
b.
(as modifier)
pork-barrel spending
Word origin
C20: term originally applied to the Federal treasury considered as a source of lucrativegrants
pork barrel in American English
US
Informal
government appropriations for political patronage, as for local improvements to please legislators' constituents