Will the Manchin-Toomey background check bill get the necessary 60 votes needed in the Senate? The Washington Post did an analysis and determined only 21 of the 100 Senate votes are in play. Here is their breakdown:

• The 16 Republicans who voted with Democrats to proceed: Lamar Alexander (R-Tenn.), Kelly Ayotte (R-N.H.), Richard Burr (R-N.C.), Saxby Chambliss (R-Ga.), Tom Coburn (R-Okla.), Susan Collins (R-Maine), Bob Corker (R-Tenn.), Jeff Flake (R-Ariz.), Lindsey Graham (R-S.C.), Dean Heller (R-Nev.), John Hoeven (R-N.D.), Johnny Isakson (R-Ga.), Mark Kirk (R-Ill.), John McCain (R-Ariz.), Patrick Toomey (R-Pa.) and Roger Wicker (R-Miss.).
• The eight Senate Republicans who voted to proceed and now plan to vote no on the Manchin-Toomey amendment: Alexander, Chambliss, Coburn, Corker, Graham, Hoeven, Isakson, Wicker.
• Members of the “Sweet 16″ who plan to vote yes for the Manchin-Toomey amendment: Collins, Kirk, Toomey.
• Still undecided: Ayotte, Burr, Flake, Heller, McCain.
• The six at-risk Senate Democrats:Max Baucus (Mont.), Mark Begich (Alaska), Kay Hagan (N.C.), Heidi Heitkamp (N.D.), Mary Landrieu (La.), Mark Pryor (Ark.).
• Democrats who plan to vote no on Manchin-Toomey: None have publicly declared they’re a “no” vote.
• Democrats who plan to vote yes on Manchin-Toomey: Hagan
• Democrats still undecided: Baucus, Begich, Heitkamp, Landrieu, Pryor. (Spokesmen for the senators said over the weekend that they continue to review the proposal.)
• Notes: John McCain said over the weekend that he is leaning toward supporting the proposal and his support likely would bring along at least three more wavering Senate Republicans, according to several aides familiar with the process.

Breitbart.com reports there are other factors at play, including $100 million in grants “for the federal government to disperse to states if those states implement the expanded background check system contained in the bill.”

One gun rights group has encouraged support of the Manchin-Toomey bill. The Citizens Committee for the Right to Keep and Bear Arms Chairman, Alan Gottlieb told supporters via email they should read the bill to understand why the group chose to support it.

(Washington Post) While leading gun-control advocates — including President Obama and New York Mayor Michael R. Bloomberg (I) — back the bipartisan proposal, the announcement of support Sunday from the Citizens Committee reveals that substantial parts of the bill are viewed as “wins” for the gun lobby, including provisions that would prohibit a government registry of gun ownership and make it easier to transport and market weapons across state lines.

Representatives on both sides of the aisle have indicated they feel it will be a close vote. One of the biggest obstacles for gun control proponents continues to be background checks. The amendments for this bill are likely to have a strong impact on its passage.