Word is getting out that Del. Bob Marshall (R-13) is forming an exploratory committee, which will include at least three significant figures in the conservative movement, to run for the Republican nomination for U.S. Senate in 2008. A formal announcement could come as early as two weeks from now. Marshall toyed with the idea earlier this month but appeared to drop it when he did not make any definitive moves at the Republican Advance. But now he seems to be moving toward a run against former Gov. Jim Gilmore, who would be a heavy favorite. The irony is, Gilmore successfully lobbied the Republican State Central Committee for a nominating convention rather than a primary to thwart the candidacy of 11th District U.S. Rep. Tom Davis, who would have attracted moderate and liberal crossover voters in Virginia's open primary system. Del. Chris Saxman (R-20) also considered a run, but decided against it. Now, a candidate such as Marshall, who could appeal to grassroots activists and Christian/pro-life conservatives who tend to show up at local delegate selection conventions, could make an impact in such a nomination battle.  Stay tuned.