FACTBOX: Over three million voted so far in U.S. races

(Reuters) - More than 3 million voters have turned out to cast ballots in the primaries and caucuses held so far this year in what is the most wide-open presidential election of the past 50 years.

Here are turnout figures for contests so far, based on media reports and party information, when available. Iowa Republican caucuses - 120,000 Iowa Democratic caucuses - 240,000 New Hampshire Republican primary - 238,000 New Hampshire Democratic primary - 290,000 Michigan Republican primary - 868,000 Michigan Democratic primary - 592,000 (not sanctioned by the national Democratic party) Nevada Democratic Caucuses - 116,000 Nevada Republican Caucuses - 44,000 South Carolina Republican primary - 430,000 South Carolina Democratic primary - to be held on January 26 Wyoming Republicans - 1,200

Sources: State officials, state parties, media reports