Ballot Bills are a type of Private Members' Bill. Ballot Bills have the best chance of becoming law, as they get priority for the limited amount of debating time available. The names of MPs applying for a Bill are drawn in a ballot held at the start of the beginning of the parliamentary year.
Further information on this subject can be found from the following links.
Result of the Private Members' Bill ballot 2010-12
About Parliament: Private Members' Bills
Parliamentary Information List: Ballot Bills since 1997 ( PDF 13 KB)
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