Attorney General Eric Holder is expected to formally announce his resignation alongside President Obama at 4:30p ET today at the White House.

Many political watchers have quickly speculated that the timing of Holder's departure is tied to the Democrats possibly losing the Senate to Republicans in November:

Jon Scott asked the National Review's Jonah Goldberg about this possibility. Goldberg said that may indeed be the real reason, noting that this could be the "last moment" for Holder to leave.

If the Republicans win control of the Senate, Democrats could try to confirm his replacement under revised Senate rules during the lame-duck session.

Goldberg said Holder's resignation sets up a "really interesting" confirmation battle.

If Democrats try to confirm Holder's proposed replacement before the election, Goldberg said that could be politically risky heading into the midterms.

"You're gonna have this very awkward moment where everyone gets to make Eric Holder's tenure and whoever this person is that's going to replace Holder into an issue going into the final weeks of the election, which could be pretty radioactive given that you'll have to talk about Fast & Furious, IRS stonewalling, and investigating our colleague James Rosen and all of that. I'm not sure that's so good for the president," said Goldberg.

Goldberg called Holder a "stonewaller" and "a hatchet man" for the president, saying he has "slow-walked" investigations, like the IRS targeting, in order to protect the White House.

Watch his full analysis below: