In most mid-term elections, the party that does not hold the presidency does quite well. That is what the Democratic Party is hoping for in the 2018 mid-term elections. The Democrats need 24 seats to change hands in order to retake control of the House of Representatives. Many political observers think there is a chance that this might happen. The Democrats regaining control of the Senate is another matter.
Every two years, one-third of the members of the Senate come up for re-election. While many Republican held seats are up, most of them are not competitive. The incumbent Republican is expected to easily win re-election.
There are two seats that Democrats think that they might be able to capture. Dean Heller of Nevada is a Democratic Party target. Hillary Clinton won Nevada in 2016, and the state has been trending more Democratic.
In Arizona, Jeff Flake announced that he will not seek re-election. Democrats believe that they might be able to capture this seat due to an increasing number of Hispanic residents who vote Democratic in large numbers.
Texas and Tennessee are Democratic Party longshots. They are putting heavy effort into these areas with the hope that a wave of Democratic Party support might carry them to victory.
On the other hand, Democrats have many vulnerable seats to defend. Heidi Heitkamp in North Dakota is vulnerable as is Claire McCaskill in Missouri. Montana, West Virginia, Indiana, Michigan, Ohio, Wisconsin and Pennsylvania all have Democratic senators. These are states that President Trump won in the last election. If voters hold to the same course in these states as they did in 2016, the Democrats may actually lose seats in the Senate in 2018.