ABC News Cecilia Vega on how Democratic candidates are spending caucus day.<br />Election campaign is heating up in the US as presidential hopefuls gear up for Iowa caucus on Monday. Republican frontrunner Donald Trump is leading the .<br />The republican and democratic candidates make their final pitch to Iowans before they go to the polls next Monday.<br />With Wall Street and Super Pacs backing, Hillary is the extension of the Obama Presidency.But will be worse. Hillary has been running for the top position in the .
