"El", the SanityIID model for the Senate race has been updated for October 19, 2014. The full set of charts can be found on the "El – US Senate Election at a Glance" page. Overall, the Democrats chances of maintaining control of the Senate have improved slightly to 33.4%, but the Republicans still hold a statistically significant probability of 63.4% of taking control of the Senate.
There haven't been many state level changes since my last writeup. Michelle Nunn (D) has the chance to gain ground in the Georgia race for the US Senate after the Democrats poured $1 million into the race. While Nunn (D) hadn't been far behind Perdue (R), she had been behind consistently. The latest three polls, however, have either shown Nunn (D) tied or slightly leading Perdue (R). While these results are interesting, it is too early to determine whether this is a short term gain or the start of a real movement for the Democrats in Georgia.
Kansas is having the opposite movement from Georgia. Republicans have come to the rescue of Senator Roberts (R). Roberts has access to new people and more money in an attempt to keep Orman (I) from taking the traditionally Republican seat. While Orman might caucus with either the Democrats or the Republicans, if Robers wins then the seat stays firmly in Republican control. And the money and expertise has been making a difference in Kansas. The latest polls show that Roberts is either tied or slightly ahead of Orman. The odds of Kansas staying in Republican hands is increasing with each passing day.
And a tiny bit of good news for Democrats in Colorado. Recent polling there has shown that, in the short term at least, the Democrats are pulling the state back to a tie status. Both of the recent polls that were released in Colorado were partisan polls done for the Democrats, so the gains have to be taken with just a hint of skepticism. Still, El takes all polls whether partisan or not and lets them average out over time. Even with the new polls, its only enough for Udall (D) to pull the state back to a short term tie with Gardner (R).