AP analysis shows how gerrymandering benefited GOP in 2016

Despite a 2010 constitutional amendment aimed at preventing political gerrymandering, Republicans dominate Florida politics. That would make for an expectation of about 65 percent, or 65 seats, going to Republicans in Indiana. Nevada's districts were decided by a court, but Republicans complained at the time that they appeared more favorable to Democrats.

An analysis by The Associated Press found that in some states, three-quarters or more of all state House or Assembly races go uncontested in the general election. Florida was found to be one of the states with the largest Republican tilts in the state House. "The result in this decade's maps has been a persistent and consequential seat advantage in favor of Republicans that will likely endure for the remainder of the decade".

But many Democratic candidates will be facing a stacked deck as Virginia is one of several states where favorably drawn districts have given Republicans a measurable advantage in past elections, an Associated Press analysis shows.

A sizable efficiency gap suggests an advantage for one party - perhaps because large numbers of voters for the other party were packed into a limited number of districts while voters for the majority party were distributed more evenly, creating more winnable districts. But the state courts struck down those maps, forcing lawmakers to draw new maps in 2013. Republicans helped gain dominance in Florida by controlling that process in 2002.

Schumer says Democrats have made clear they would be willing to work with Republicans to pass a Senate bill if they agree to drop a repeal of the Affordable Care Act and instead work to improve it.

Republicans have controlled the Idaho Legislature for almost six decades, but a national Associated Press analysis shows that the state GOP may have gained even more control last fall with the help of Republican-friendly districts.

As a result, Schale said, districts seen as competitive still have a slight Republican edge: "Even the places that are competitive aren't truly like jump balls".

Former Republican state Rep. Jeff Kottkamp sat on the House committee that redrew House maps.

"It's become a little bit of a hard sell with our larger majority because we have a lot of people who have not served in the minority", Torr said. "It just wasn't always possible", he said.

The moderate Republican says she has "very serious concerns" about the proposed legislation but hasn't yet taken a position on it. Currently, the 11-person reapportionment panel consists of party leaders in both legislative chambers, three gubernatorial appointees and four by the Supreme Court chief justice.

That figure is up significantly since the last round of redistricting after the 2010 census.

According to the AP analysis, Colorado's Republican congressional candidates won 51 percent of the statewide vote in November to maintain their 4-3 margin. The same has been true for voters in part of Kansas City, where their lone option has been a Democrat. "The GOP is strong in Wyoming because of the common interest among Wyomingites in the long-standing conservative principles that make up the heart of the Wyoming Republican Party", Mulholland said.

Republished with permission of The Associated Press.