Hillary Clinton says the United States needs to “break down that highest, hardest glass ceiling” of electing a female president.

“I know I have a decision to make,” Clinton told People magazine in a wide-ranging interview published Wednesday.

“To have a woman president is something I would love to see happen, but I’ll just have to make my own decision about what I think is right for me,” Clinton, widely considered the frontrunner for the Democratic nomination, told CNN.

Clinton also discussed becoming a grandmother, and whether that would change her calculus. Her daughter Chelsea is expecting her first child this fall.

“With the extra added joy of ‘I’m about to become a grandmother,’ I want to live in the moment. At the same time I am concerned about what I see happening in the country and in the world,” she said.

Clinton’s interview, which will appear in People‘s issue hitting newsstands Friday, comes right before she embarks on a national tour promoting her new book Hard Choices about her experience in the Obama administration.