Former Secretary of State Hillary Clinton enters Tuesday’s first presidential debate with a significant lead over her rivals for the Democratic nomination, after seizing the offensive against her most aggressive critics — House Republicans. According to Morning Consult’s most recent poll, Clinton leads the Democratic field with 54 percent of the vote, compared with 22 percent who say they will back Sen. Bernie Sanders (I-Vt.). That’s a significant boost over last week, when Clinton led by 21 percentage points, 48 percent to 27 percent. Snip On the Republican side of the aisle, real estate magnate Donald Trump retains a wide...