by Jeff Zeleny and Carl Hulse
Republicans remain confident of making big gains in the fall elections, but as the midterm campaign begins in earnest, they face a series of challenges that could keep the party from fully capitalizing on an electorate clamoring for change in Washington.
There are growing concerns among Republicans about the party’s get-out-the-vote operation and whether it can translate their advantage over Democrats in grass-roots enthusiasm into turnout on Election Day. They are also still trying to get a fix on how to run against President Obama, who, polls suggest, remains relatively well-liked by voters, even as support for his agenda has waned.




















