A brokered convention is very unlikely. But the possibility that the Republican nomination will come down to a convention floor fight keeps coming up. Former House Majority leader Dick Armey (R-Texas) is the latest to suggest it; Rush Limbaugh and Joe Scarborough say conservatives are chattering about the idea.

If it did happen, here’s how it would work.

At each caucus or primary, voters are actually choosing delegates to the national convention who have pledged themselves to a candidate. At the Republican convention in Tampa, the 2,286 delegates will vote.

In recent history, conventions are basically a meaningless tradition in which only one ballot is held, choosing a nominee that has already been decided in the primaries.

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