Bright and Davis are allies in the SC Senate. I would imagine they are friends as well. If people on a internet forum that live hundreds of miles away from SC, see that the both of them running would be a bad situation that would split votes, they can see it as well. So, I am almost 99% certain that you won't see both of them running for the same office. Neither of the two are up for reelection for their SC Senate seat, so they can run for US Senate without fear of losing their current seat. Right now, both are likely assessing the race, determining how much money it will take to defeat Graham, and if it is possible for them to raise that amount of money. If the numbers work out, then one of the two will take a shot at Graham.