The U.S. presidential race officially kicks off Monday with the much anticipated Iowa caucuses, the first major electoral test in the long run for the White House .
The last major preference poll before Mondays Iowa caucuses showed a change at the top of the GOP race. The Iowa Poll, published Saturday by The Des .
In the run-up to Mondays Iowa caucuses, White House hopeful Hillary Clinton has a lead of just three percentage points according to an influential last-minute .
Theres a tight race ahead of the Iowa caucuses as GOP candidate Donald Trump reclaims his lead from rival Ted Cruz. CBS News senior political editor Steve .