Maine, Kansas Senate races neck and neck as Democrats lead in Texas, Michigan, poll shows

High-profile races that will determine which party controls the Senate for the next two years are extremely tight, according to a new CNN poll, as Maine and Kansas remain close and Democrats extended their leads in Texas and Michigan.

Democrats, who are widely projected to win a majority in the House of Representatives, need to flip four Senate seats from red to blue in order to gain a 51-seat majority, protecting their majority from the vice presidential tiebreaker.

In Maine, Sen.