President Obama, New Jersey Gov. Chris Christie both in Chicago this weekend

CHICAGO (WLS) -- New Jersey Gov. Chris Christie is back in Chicago, joining candidate for governor Bruce Rauner to do some fundraising.

The visit is aimed at giving a boost to Rauner's campaign - and five republican congressional candidates.

It's also the first of several high-profile political visits to the city.

This weekend, President Obama comes to Chicago, and next week former President Bill Clinton and Vice President Joe Biden will be here.