Both political parties have found rare agreement in a divided Washington, convinced that the GOP’s federal voter ID and election bill is a slam-dunk messaging opportunity.

But that’s where the bipartisanship quickly ends. The two sides are diametrically opposed over the merits of the so-called Safeguard American Voter Eligibility Act, or the SAVE America Act, which will be the subject of discussion on the Senate floor for the foreseeable future during a marathon debate session that began Tuesday.