Mitt Romney has solidified himself as the leader of the pack on the GOP side of the equation in the quest for Iowa caucus voters, as demonstrated by the latest monthly poll by American Research Group (ARG). Romney has the support of 25 percent of likely Republican caucus voters in the ARG survey conducted June 26-30—seven points more than Rudy Giuliani (18 percent) who has hit his lowest level of measured support in the seven polls conducted by ARG since December 2006.
Romney now leads in almost every major poll taken in Iowa since May including the Iowa Poll (Des Moines Register), Zogby, and Mason-Dixon. In the ARG poll, Romney's support has increased from 8 percent in February, to 10 percent in March, to 14 percent in April, to 16 percent in May, to 25 percent in late June. Romney's strategy to run television ads this early in the campaign in Upper Midwestern states like Iowa and Minnesota appears to be paying dividends.
Likely candidate Fred Thompson has been listed as a candidate in the ARG poll since March 2007, and now garners 14 percent of the support of likely GOP voters. John McCain comes in fourth at 13 percent—his lowest level in the seven months of ARG polling as well.
Former Wisconsin Governor Tommy Thompson, who vows he must win the upcoming GOP Iowa Straw Poll to remain a serious presidential candidate, received 3 percent—tied for sixth with Kansas Senator Sam Brownback (both trailed non-candidate Newt Gingrich at 5 percent).