The last two months have shown former Secretary of State Hillary Clinton losing support in the Democratic nomination contest to Vermont Sen. Bernie Sanders, although she has continued to hold a commanding lead. Recent polling suggests her support in key battleground states may be slipping against Republicans as well. CNN reports on how she fares against three leading GOP candidates: former Florida Gov. Jeb Bush, Florida Sen. Marco Rubio, and Wisconsin Gov. Scott Walker:

Poll: Clinton trails top Republicans in battleground …