I used to vote for stuff like that, then wondered why my taxes kept going up.
It's a tried and true Democrat tactic.
Libraries are already covered by the local community's taxes. So, a Democrat who wants more money for his/her pet project will re-allocate taxes from places such as schools, roads, libraries etc. to that project, then ask the voters to make up whatever was taken from the things they will usually support without question.
They do the same thing with general budget cuts and losses.
Instead of hurting their projects or their paychecks, they take the funds from schools, cops, and firemen - because people will vote to replenish those funds without a second thought.