It's called street money or walking around money and it's quite common here in Philadelphia.
这被称为 street money 或 walking around money，在费城很常见。
绝望的主妇视频版 第6季
You know, so he'd have a little walking around money.
这样他手边就有零用钱了。
英语百科
Street money
Street money is an American political tactic in which local party officials are given legal cash handouts by an electoral candidate's campaign in exchange for the official's support in turning out voters on election day.