The battle for control of the Senate won't conclude until November 2016, but decisions made this year in a few key states could go a long way toward deciding the outcome.
In contests in which open seats can be won or a vulnerable incumbent toppled, this is the period when parties focus on a single issue: recruitment of candidates.
Republicans are searching to find candidates in two states -- Colorado and Nevada -- where they have hopes of picking up Senate seats.
Democrats lost control of the Senate during the last midterm election but have an edge in regaining control in 2016. They're set to defend 10 seats this time around compared with 24 for...