This article was originally published by Reuters:

WASHINGTON (Reuters) – Republican presidential candidate Chris Christie has dismissed him as a puppet and former mentor Jeb Bush called him not fit to serve as up-and-coming Republican Marco Rubio becomes the man to beat in next week’s New Hampshire primary.

Rubio’s unexpectedly strong third-place showing in Monday’s Iowa caucuses has made him the target of rival Republican candidates who focused their campaigns on the New England state’s first-in-the-nation primary.

Christie, the New Jersey governor, former Florida Governor Jeb Bush and Ohio Governor John Kasich all hope for a strong showing in New Hampshire to boost their flagging campaigns to become the Republican nominee in the Nov. 8 election to replace Democratic President Barack Obama.

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