Bernie Sanders, a presidential hopeful Vermont Senator, is received by a large crowd in Iowa on Monday.

Sanders is said to have tripled his support when he shows up at Iowan to pitch his presidential candidacy.The Bloomberg Politics/Des Moines Register Poll recorded 750 attendees in his recent visit in Iowa. The organizer has only prepared 300 seats for the said gathering.

Bernie Sanders has announced his 2016 Presidential Candidacy Tuesday in his hometown of Burlington, Vermont. His kickoff event was a mix of rally and festive event. His campaign focuses on invalidating the "obscene levels" of income and wealth inequality, which believed to have eroded the middle class for over 40 years.

But, it wasn't only Sanders who is pitching in Iowa. Martin O'Malley who launched his presidential bid last Saturday is considered the underdog amongst presidential candidates.

Yet, O'Malley seems to embrace the underdog role and his campaign which centers in rebuilding the truth of the American dream for all Americans might attract more supporters.

In Iowa's poll, O'Malley shows only 3% of likely Caucos-goers, which is about 50% behind Hilary Clinton.

Hilary Clinton still has that commanding influence in the Democratic field in Iowa. Though, she rules the roost. Sanders is racing against her as the people's favorite. Remember, Clinton ended the third place during the 2008 Presidential election and she won the heart of Iowa.

Clinton will not only watch the poll of Bernie Sanders and Martin O'Malley but also Lindsey Graham. Graham is said to be Iowa's retail politics. This South Carolina Senator has expressed desire to run for presidency.

Lindsey Graham's Iowan adviser, Tracie Gibler, says that the South Carolina Senator will be seen more often in Iowa for the next several months. Graham will work out his poll and will get ahead of Clinton or Sanders or O'Malley.

Sen. Graham's cause to run this 2016 Presidential election is to strengthen national security. The Republican senator said that he is "ready to be commander-in-chief on day one," when he announced his presidential bid in his hometown on Monday.

These four presidential candidates, Bernie Sanders, Hillary Clinton, Martin O'Malley, and Lindsey Graham, have just started their road campaigns and will be in tough competition to win the 2016 Presidential Election.