(CNN) – She often makes the list of potential Republican vice presidential picks, but if asked to serve in the No. 2 spot, New Mexico Gov. Susana Martinez said her answer would be "no."
The first term governor cited her developmentally disabled sister and commitment to New Mexico residents as reasons for her decision.
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"The family has to be a consideration, and for me to take (my sister) to Washington would be to separate her from … the family that's down there, and that would be devastating," Martinez told the Albuquerque Journal recently. "I just couldn't do it."
Martinez, the first female governor of New Mexico and first female Hispanic governor in the U.S., said stepping down as governor before reaching her goals would be like "jumping ship."
"I can't do this halfway and jump into something else. It would distract from what we have to do here," Martinez said.
The V.P. speculation game has occupied many a pundit, blog post and newspaper column inch as Romney continues to advance his delegate total.
While some potential veeps like Sen. Marco Rubio of Florida and Gov. Bob McDonnell of Virginia have left the door open (if only a crack), others like Rep. Paul Ryan of Wisconsin and Gov. Nikki Haley of South Carolina have firmly shut it.
Martinez has pushed back against White House speculation since her inauguration in 2011, when she questioned how she could be a role model for young women if she abandoned her post early.