I certainly hope that the possibility of "The Front Runner" being filmed is true. I read it waaaay back in 1976 or 1977 when it was first published, and recall the explosiive reactions of pride, anger, and revenge which it provoked.
As for parallels with BBM: they're tenuous at best. While Annie Proulx's short story was heralded as a masterpiece of modern literature, Patricia Nell Warren's work hardly reached those lofty levels. Granted, it's basically a melodramatic gay Harlequin Romance, but it sure caused plenty of tears on my pillow.
In the hands of great screenwriting and direction, The Front Runner could be quite a flick. Larry, Osanna, and Ang -- are you listening???