* RollCall…

Freshman Rep. Rodney Davis, R-Ill., a top Democratic target this cycle, had a 19-point lead over his opponent with six weeks to go until Election Day, according to a poll conducted for his campaign and provided first to CQ Roll Call.

Davis led Democratic rival Ann Callis, 55 percent to 36 percent, in the survey of the 13th District conducted by the GOP firm Public Opinion Strategies. Just 7 percent of voters were undecided.

The poll found atmospherics in the district are also stacked against Callis, making it tougher for her to make up ground in the short amount of time left until the election.

President Barack Obama’s approval rating stood at just 38 percent in this Springfield-based seat in his home state.

At the same time, the gubernatorial contest in the Land of Lincoln could also drag Callis down.

Democratic Gov. Pat Quinn badly trailed Republican gubernatorial nominee Bruce Rauner, with 30 percent to Rauner’s 47 percent, according to the 13th District survey.

* The polling memo…

The political environment in the 13th District is favorable to Republican candidates.

Just 24% of voters say the country is headed in the right direction; nearly three-in- four voters (71%) say the country is off on the wrong track.

President Obama has a dismal job approval rating in the district. Just 38% of voters approve of his performance as president, while 58% disapprove – 45% of them strongly.

The Republican leads by eight points (45%-37%) on the generic Congressional ballot, and voters prefer a Republican who will be a check and balance to Barack Obama and Congressional Democrats to a Democrat who will help Barack Obama and Congressional Democrats pass their agenda by a 14-point margin: 53% to 39%.

The gubernatorial race is not competitive in the 13th District: Republican Bruce Rauner leads Democratic incumbent Pat Quinn 47% to 30%, while libertarian Chad Grimm clocks in at 10%.

Rodney Davis has a significant name ID and image advantage over Ann Callis.

Davis’s name ID is 85%, and his image among voters is 41% favorable/21% unfavorable.

Fewer than two-in-three voters (63%) have heard of Ann Callis, and her image is polarized: 19% of voters have a favorable impression of her, while 17% have an unfavorable impression of her.