Brighton Kemp Town MP Des Turner has been thwarted in his bid to bring in laws to curb tobacco advertising.
Dr Turner has the chance to steer legislation of his choice through Parliament after coming fourth in the Private Members' Bill ballot.
His high position in the ballot means there will be Parliamentary time available for him to get a Bill on to the statute books.
But Liberal Democrat peer Lord Clement-Jones has put down an almost identical Bill in the Lords, forcing Dr Turner into a rethink.
He said: "The Liberal peer has scuppered any chance of much-needed legislation banning tobacco advertising getting through Parliament this session.
"It stands no chance of success if it starts in the Lords and there is little point in having two similar Bills going through Parliament at the same time."
Dr Turner is hoping for success in another field.
Dr Turner said: "I have several ideas and I am currently weighing them up."
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