GOP loses another key incumbent as third lawmaker in a week announces retirement

The wave of retirements that Republicans have feared appears to be gaining steam.

Rep. Dave Trott (R-MI) announced on Monday that he would not seek another term, marking the third GOP lawmaker in the past week to announce their retirement.

Last week, Reps. Dave Reichert (R-WA) and Charlie Dent (R-PA) both announced that they would not seek additional terms in office, thus opening up fresh pickup opportunities for the Democratic Party in 2018.

Cook Political Report analyst Dave Wasserman says that Trott's retirement shift's his rating of the race in his district from "likely Republican" to "toss up."

Additionally, NBC News reporter Carrie Dann notes that Trump defeated Hillary Clinton in Trott's district by five percentage points in 2016, although the district narrowly voted for former President Barack Obama in 2008.

Read Trott's full statement announcing his retirement below.