Two more polls and two more indications that Republican Senator Pat Roberts is vulnerable. Roberts is perhaps best known in this community for having slow-played reports on pre-Iraq War intelligence as head of the Intelligence Committee in the Senate.

Democratic polling released last week by the campaign of former Democratic Congressman Jim Slattery, shows Roberts up just 48 percent to 36 percent in a head-to-head matchup -- the exact same margin as was found in the last two independent polls on the race. Now Rasmussen Reports has released new numbers out of Kansas, and they look even better for Slattery's chances:

Pat Roberts (R): 48 percent
Jim Slattery (D): 39 percent

This race isn't quite there yet -- but it is definitely on its way. At this juncture, Kansas is one of the stops -- perhaps even the last one -- on the way to the Democrats securing a 60-seat majority, making it one to keep a real eye on. What's more, it's the type of race that helps break the Republicans' backs and tear down their 41-seat firewall in the Senate, as every additional race they are forced to dump money in takes money away from more even more endangered seats elsewhere. So this is very exciting stuff.