for the third time in three years, the nuns embarked on a tour in 2014. the trip though 10 key u.s. senate battleground states was scheduled to last a month and focus on campaigning against the impact of outside money on politics. the issue of "dark money" has received attention particularly through the large donations from wealthy donors. sister simone campbell said the tour was not advocating any particular policy regarding unregulated campaign contributions. rather, it focused on voter registration drives particularly in low-income neighborhoods, encouraging voters to cast their ballots in the november election. one of the campaign themes against outside money was: "vote: strong voter turnout overpowers the influence of big money in politics. dollars can't vote, you can." campbell was interviewed during the stop in des moines, iowa, where she clarified that the 2014 bus tour centers on the nuns' belief that "the growth and influence of outside money in our political system threatens to undermine the nation's democratic foundations by silencing the voices of everyday americans." she added that this is a non-partisan issue. "this trip isn't about progressive or liberal. it's about 100 percent voting. it's a middle of the road issue," campbell said.