How they actually open could well hinge on the first estimate of U.S. economic growth in the final quarter of 2012 and the monthly jobs figures from private payrolls firm ADP.

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The first is really what Pebble is doing, the success of which will hinge a lot on the app ecosystem it is able to foster.

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The decision on whether to call a general election will hinge on the outcome of 13 contests for the powerful post of periferiarch (regional governor), the first time in Greece that senior administrators have been directly elected.

ECONOMIST: A tense mood in Greece ahead of high-stakes local elections