We're monitoring the breaking news out of Boston where where two explosions were reported at the marathon. We'll have the latest at 10pm ET.
Plus, the Manchin-Toomey bill to expand background checks is slowly picking up votes, but it's expected to be a close one in the Senate. Right now, at least four Republicans senators have committed to support it: Pat Toomey of Pennsylvania, Mark Kirk of Illinois, Susan Collins of Maine and John McCain of Arizona. Breaking with the powerful National Rifle Association, a pro-gun rights advocacy group, Citizens Committee for the Right to Keep and Bear Arms, endorsed the measure.
Here's a look at stories we're following this afternoon.
- Two explosions reported at Boston Marathon
- Manchin-Toomey vote inching closer to 60, expected Wednesday
- Gun rights group endorses background check bill
- Mitch McConnell in no mood for bipartisanship
- US attracting less foreign students due to gun violence
- Missouri school trains teachers to carry guns, most parents approve
- NRA 500 suicide: Man shoots himself to death at NASCAR race
- Howard Dean: Obama might drive me out of the Democratic party
- Poll: Fewer believe taxes are fair
- Marco Rubio throws all his weight behind immigration reform
- SNL weighs in on gun control fight