The congressman reported he had raised $482,000 and had $1.1 million cash on hand in the time period ending June 30. MPR says Kline's cashflow trend suggests he may be stockpiling funds to respond to an ad blitz by Democrats.
Democratic former state representative Mike Obermueller, who challenged Kline in 2012, will also run again in 2014. Kline defeated Obermueller by more than 8 percentage points.
After redistricting two years ago, Minnesota's 2nd District is more Democratic-leaning, with slightly more votes for President Barack Obama in last fall's election, according to a St. Cloud Times report. Ken Martin, chairman of the Minnesota DFL, told the newspaper that the district is now considered a swing district.
The only other Republican running so far is engineer David Gerson. The Star Tribune said he earned 15 percent in a primary against Kline last year.