What was the main goal of political machines during the Gilded Age?

Political machines were simply an organization that had an understanding with political candidates about answering their interest once elected. Political machines had enough influence to fix elections and get a certain politician elected to their desired office. In exchange for this politicians would give the people behind their getting elected, the political machine, a kickback. It's a lassiez-faire concept, you do something for me I do something for you.