Ted Cruz is helping get Mitch McConnell kicked out of the Senate.

Once again, the tea party has done Democrats a big favor. McConnell already trails his Democratic general election challenger Alison Grimes by 4 points. Cruz’s stunt will only make McConnell Republican support even weaker.
Ted Cruz is the gift that keeps on giving, but his greatest gift to Democrats may end up being getting Mitch McConnell booted out of the Senate.

http://www.politicususa.com/2014/02/12/ted-cruz-democrats-big-favor-today-cost-mitch-mcconnell-senate-seat.html