The Iowa caucuses to loom today— the first votes after 1,500 candidate rallies, 60,000 TV ads and a nail-biting tightening of the polls here. The state's voters are poised to play a significant role ever in both parties' nominating contests.

The final polls before the Iowa caucus, released by the prestigious Des Moines Register newspaper in association with Bloomberg show a different story for the two front-runners -Trump, 69, and Clinton, 68.

While Trump has overtaken Senator Ted Cruz from Texas in this latest Iowa poll, Clinton has a slim edge over Senator Bernie Sanders.

Trump has support of 28 percent, while Cruz follows him with 23 percent. In a previous poll released on January 13, Trump (22 percent) had trailed Cruz (25 per cent).

On the other hand, the poll showed that Clinton's lead over Sanders is very slim.
 
The former secretary of state is the favourite of 45 percent of prospective Democratic caucus-goers, while 42 percent support Sanders. As a result, many see this as a dead heat in the Democratic Party.

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