To Vote
する verb
Throw a ballot in the ballot box to vote.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well. You may have to think back to some other words using 投 to remember the on'yomi reading, 投資 for example.
今回の選挙でも投票するつもり？
Are you planning to vote at this election as well?
住民票を移すのを忘れてたので、この町ではまだ投票できないんです。
I forgot to transfer my residency, so I can't vote in this town yet.
この会社では、毎年CEOを選ぶために全社員が投票することになっている。
In this company, every year all the workers have to vote to choose the CEO.