Background: Paul Davis Ryan Jr. (born January 29, 1970) is an American politician serving as the 54th Speaker of the United States House of Representatives since 2015. He was the Republican Party nominee for Vice President of the United States, running alongside former Massachusetts governor Mitt Romney in the 2012 U.S. presidential election. Ryan also has been the U.S. Representative for Wisconsin's 1st congressional district since 1999. He was previously chair of the House Ways and Means Committee from January 3 to October 29, 2015, and, before that, chair of the House Budget Committee from 2011 to 2015.
Context: Ryan was first elected to the House in 1998, winning the 1st District seat of Republican Mark Neumann, a two-term incumbent who had vacated his seat to make an unsuccessful bid for the U.S. Senate. Ryan won the Republican primary over 29-year-old pianist Michael J. Logan of Twin Lakes, and the general election against Democrat Lydia Spottswood. This made him the second-youngest member of the House.  Reelected eight times, Ryan has never received less than 55 percent of the vote. He defeated Democratic challenger Jeffrey C. Thomas in the 2000, 2002, 2004, and 2006 elections. In the 2008 election, Ryan defeated Democrat Marge Krupp.  In the 2010 general election, he defeated Democrat John Heckenlively and Libertarian Joseph Kexel. In 2012, under Wisconsin election law, Ryan was allowed to run concurrently for vice president and for Congress and was not allowed to remove his name from the Congressional ballot after being nominated for the vice presidency. He faced Democratic nominee Rob Zerban. As of July 25, 2012, Ryan had over $5.4 million in his congressional campaign account, more than any other House member. He was reelected with 55 percent of his district's vote and 44 percent of the vote in his hometown, Janesville.  Zerban again challenged Ryan in the 2014 House election. Ryan won with 63 percent of his district's vote.  In the 2016 Republican primary election, Ryan faced businessman Paul Nehlen, who had been endorsed by Sarah Palin. Because of Nehlen's support for Trump, Trump publicly thanked him on Twitter and later told The Washington Post that Nehlen was "running a very good campaign", even though he did not endorse him. On August 5, 2016, Trump endorsed Ryan's re-election after pressure from fellow Republican leaders. In the August 9, 2016 primary election, Ryan overwhelmingly defeated Nehlen, taking over 84 percent of the vote. In the November general election, Ryan faced Democrat Ryan Solen and won with 65 percent of his district's vote.
Question: Was there any controversy in his elections?

Answer:
Reelected eight times, Ryan has never received less than 55 percent of the vote.