For at least the last three months, Norm Coleman has had no realistic hope of winning Minnesota’s U.S. Senate election, but that hasn’t stopped him from fighting the inevitable in court. It’s obvious that Coleman’s legal maneuvering has no goal other than to keep Al Franken out of the Senate for as long as possible.

That has collateral benefits for Republicans on a national scale, making it harder for Senate Democrats to win 60 votes to break a filibuster. Barack Obama may have been able to get his economic stimulus bill through the Senate with fewer concessions if he had needed only two Republicans to sign on (instead of three).

Unfortunately for our neighbors to the north, Coleman’s obstruction has done significant and lasting harm to Minnesota. John Deeth explains why in this great post about seniority rules in the U.S. Senate. Had Franken been sworn in with the rest of the class elected last November, he would now rank 94th in seniority, but instead he’s going to rank 100th (click the link for the full explanation, which is worth your time).

Making matters worse for Minnesota: all six of the senators Franken should outrank, but doesn’t, are fellow Democrats.

How much this matters in the long run depends on the longevity of the six senators who leapfrogged over Franken. […]

Michael Bennet and Kirsten Gillibrand will probably face primaries, too, but after a first electoral test they, and Merkley and Begich, could last awhile (particularly Gillibrand, who at 42 is the youngest Senator). Franken, at age 57, could be around long enough that those lost months of seniority will make a difference between him and let’s say Gillibrand getting a chairmanship sometime around 2018.

If you want to make Republicans pay for Coleman’s sore-loserdom, support the campaign Senate Guru wrote about over the weekend: “A Dollar a Day to Make Norm Go Away.”