Susan J. Demas: Rubio has 'momentum,' but there's no clear path to victory –– yet

Marco Rubio has the "big mo" in Michigan.

In the past week, he's been endorsed by U.S. Rep. Bill Huizenga, R-Zeeland, and big GOP donor John Rakolta, a former Mitt Romney backer. Rubio also announced a campaign rally next week in Waterford.

Rubio had a slow start in the Mitten State, although he earned praise for his Detroit Economic Club speech this summer, as well as the blessing of U.S. Rep. John Moolenaar, R-Midland.

But Rubio has chosen to primarily concentrate on early states like Iowa and New Hampshire (we don't vote until March 8, after Super Tuesday).

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