Chapter 1 Study Notes: From Sam Rayburn to Newt Gingrich

In the early 1970s, parties were weak and members often voted with the opposition over their own party.
Respected commentators like David Broder claimed that "the party being over."

By the 1990s, Democrats and Republicans appeared as opposing factions with starkly differing policies and ideas about good public policy.
Decision-making became a competition between parties, particularly in committee sessions and on the House floor.
The majority party started excluding the minority party from meaningful legislative roles.
Customary civility and decorum disappeared; name-calling and hostility became common.

Sam Rayburn, Speaker of the House, encouraged unity among members, advising new members to "get along and go along."
The collegial atmosphere of the 1950s deteriorated post-1960s due to civil rights battles and the Vietnam War.
Traditionally civil exchanges were often replaced by acrimonious debates.
Significant votes were less often decided along party lines; the 91st Congress saw party members voting with their colleagues only 70% of the time.
Figures from this era showed more cross-party friendships; significant collaboration and discussions occurred off the floor, exemplified by close ties between leaders like Speaker O'Neill and Minority Leader Bob Michel.

In stark contrast, the late 1990s are characterized by extreme partisanship, with Republicans accusing Democrats of corruption and tyranny.
The Annenberg Public Policy Center reported increasing rates of name-calling and vulgarity; hostility escalated at the floor and committee levels.
Policy debates became increasingly split along party lines.
The 104th Congress's votes showcased that two-thirds of recorded votes were party votes, with 90% of Republicans voting together compared to 85% for Democrats.
Party meetings intensified, as leaders spent less time socializing across party lines.

Table 1.1: Party Voting in Congress by Decade indicated trends in partisan voting within the House and Senate, showing an increase in party line votes over decades, growing from less than 30% in the 1970s to 54-57% by the early 2000s.
Figure 1.1: Party Distance Score graph visually represents the increasing ideological distance between both parties in the House and Senate from 1955 to 2004, showing a consistent rise.

Poole-Rosenthal DW-nominate scores interpret members' positions on a left-right scale based on roll call voting, highlighting increasing ideological divergence.
Figure 1.2 displays ideological distance over time, showing how Democrats and Republicans increasingly drift apart from each other.

Figure 1.3 illustrates the changing distributions of DW-nominate scores among House members, indicating prior overlaps between parties diminishing significantly.
The absence of overlap means that the most conservative Democrats are now situated to the left of most Republicans, creating a more homogenous voting behavior within parties.

Despite the emergence of more homogenous partisan groups, reasons for this drastic transformation still elude scholars.
The chapter discusses how voter behavior, politician actions, and political activists significantly contributed to partisan polarization.

Historically, almost no Republicans were elected from the South until changes in the 1960s and 1970s shifted political allegiance with the Civil Rights Act and Barry Goldwater's nominations.
This shift from a Democratic Party stronghold to increasing Republican dominance is directly linked to partisan polarization.

The Voting Rights Act and civil-rights initiatives allowed for more involvement of black voters in elections, further influencing the political landscape in the South.
White conservative voters started aligning with the Republican Party, consolidating their party affiliation due to ideological consistency on conservative issues.

As conservative Southerners switched to the Republican Party, it altered the Congressional balance.
The influx of conservative Southern representatives further polarized the party ideologically, with studies attributing a portion of the polarization to the demographic changes.

The trends observed in the South mirrored a growing national divide between urban/rural, liberal/conservative demographics in other regions, especially for voters outside the South.
There has been a stronger correlation between voters' ideological self-identification and political party membership.

Political activists with stronger-than-average knowledge and engagement became integral to shaping party policies and electoral strategies.
Political activists have become more polarized over time, with substantial differences in ideology between Republican and Democratic activists.

Survey results from previous years demonstrate the growing divergence of activist ideology, with fewer moderates remaining. Activism’s effects on voter mobilization are profound, leading to candidates catering increasingly to activist demands.

One argument positing that redistricting is responsible for polarization is addressed, noting that redistricting might only marginally contribute to already existing polarization.
Demographic changes and voter realignment are deemed more influential factors than redistricting.
Evidence shows that even in states without redistricting, senators reflect the polarization seen in the House.

In summary, party polarization stems largely from changes in voter preferences, activist behaviors, the political environment, and internal Congressional dynamics. As the political landscape transformed, so did the ideological alignment of parties, leading to the partisan divide we see today.