President Obama pressed his critique of the Republican convention today, telling a crowd of students in Colorado that the GOP is only offering already discredited economic plans.

"They are exhausted of ideas," Obama said at the University of Colorado in Boulder.

Republican plans for more tax cuts will lead to reduction in services for the middle class, and create the kind of top-down economy that crashed in 2008, Obama said.

Obama repeated lines from the revamped stump speech he unveiled Saturday in Iowa, as he kicked off his "Road to Charlotte" tour that leads to this week's Democratic Convention in North Carolina.

The Republican convention features ideas better suited to the past century, Obama said. The president told the crowd that the Republicans spent a lot of time talking about him and their nominee Mitt Romney, "but they didn't spend a lot of time talking about you."

Like Iowa, Colorado is a closely contested state that could decide the race between Obama and Republican Mitt Romney, who accepted his party's nomination on Thursday night.

After speaking in Boulder, Obama headed to another pivotal state: Ohio, where he speaks Monday.

Romney spokesperson Amanda Henneberg said Obama is the one without new ideas, only attacks on the Republicans.

"Instead of taking us forward," she said, "President Obama is taking us on a path of declining incomes, high unemployment, and trillion dollar deficits."

In his critique of Romney's speech, Obama noted that he never mentioned the war in Afghanistan.

The president also criticized his challenger's plan to repeal the 2010 health care law, saying it would cost millions insurance coverage.

"He calls it Obamacare," Obama said. "I kind of like the name -- I do care." He then suggested that the Republican alternative might be called "Romney Doesn't Care."