With 100 days to go until Election Day, Senate Republicans have plenty of reasons to be optimistic about winning the majority — but they also have grounds for concern. After coming up short in 2010 and 2012, the GOP is unquestionably well positioned to finish the job this time. Republicans need to match their November 2010 score of six seats to take the majority, and the party has multiple paths to the finish line. That’s thanks to a successful recruitment push that didn’t conclude until late February, and a playing field naturally tilted in the GOP’s direction — seven Democrat-held seats are in states President Barack Obama lost in 2012, six of those by double digits. But, as optimistic as Republican operatives are heading into the final stretch, the GOP has reasons to restrain its confidence. With tens of millions of dollars of advertising already spent by outside groups on both sides, just one Democratic incumbent is, at this point, a solid underdog for re-election. Reasons for Republicans to Be Optimistic (more…)