Republicans have a clear advantage on immigration in a recent poll, a potent weapon for GOP candidates in the final stretch of the midterm elections.

The George Washington University Battleground Poll shows that more Americans trust Republicans to do a better job handling immigration than Democrats, 48 to 41 percent — and in states with competitive Senate races, the share of people who trust Republicans more on immigration jumps to 61 percent. In addition, the poll shows that 58 percent of Americans either somewhat or strongly disapprove of President Obama‘s handling of immigration.