Three September debates have shaken-up the race for the Republican presidential nomination. Herman Cain has jumped into the top tier. Rick Perry’s stumbled. Mitt Romney’s holding steady.

And Michele Bachmann is hitting bottom. That’s according to a Fox News poll released Wednesday.

The new poll found Cain’s support has nearly tripled among GOP primary voters to 17 percent.

That’s up from 6 percent before this month’s debates, and puts him in what is essentially a three-way tie with Perry and Romney.

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