Although this represents only 8 percent of the delegates that Mr. Romney would eventually need to cinch the Republican race, it would nevertheless constitute a tangible advantage in the event of a close back-and-forth race against Mr. Gingrich.
This started a back-and-forth arms race, as both sides developed improved weapons, engines, airframes and materials, which continued until the end of the war.
The back-and-forth Best Actor race has a winner: Eddie Redmayne, who won the Oscar on Sunday night for playing Stephen Hawking in "The Theory of Everything".
During the match, the two battled back and forth, with Race even trying unsuccessfully to give the prone Dog a falling headbutt which naturally failed.
That is the kind of shift political analysts look for in polls, because it suggests a more lasting and difficult-to-change shift in voters' attitudes that tend to be more consequential than the back-and-forth of the weekly horse race.
That's the sort of glacial back-and-forth the rest of the race is going to yield, unless the superdelegates make a big decision.
That back-and-forth is especially fierce in the race in the 24th District, in central New York.
Kebede was second here in 2010 in a tight race, losing a back-and-forth duel to Kenya's Sammy Wanjiru by 19 seconds.
And the math so far suggests that a race that goes back-and-forth in public sentiment may still leave Mr. Romney with a considerable advantage in the delegate count.
Miller built this all-electric tool transporter from scratch, having tired of lugging tool chests back and forth to the race pits, and it includes a generator, car-lift and row upon row of sliding drawers.
The writing weaves back and forth between her race and her cancer.
