The Senate playing field is starting to solidify, and the fight for the majority looks like it will be decided in about a dozen states. But even though the fields of candidates are still taking shape in some of those contests, both Republicans and Democrats are banking on some macro-factors that will affect races at the micro-level. Democrats are counting on three trends to boost their effort next year: 1. History will repeat itself in GOP primaries. This isn’t all that big of a stretch considering Republicans handed five Senate seats to the Democrats over the past two election cycles because weak GOP nominees have thrown races away. This cycle, GOP primaries in Kentucky, Alaska, North Carolina, Georgia and South Carolina could affect the party’s prospects next November. Of course, just because it has happened in the past, doesn’t mean it will happen again. And some of this cycle’s GOP primaries are in states that Republicans probably won’t need to win to get to the majority, including Iowa, Michigan and Minnesota. 2. Democrats will be able to boost turnout to presidential levels or beyond. This is a big question mark. Democrats are looking to mobilize young voters and minority voters next year to lessen the impact of a traditional midterm electorate that is older and white and usually benefits Republicans. (more…)